Green Thumb Tip #24: Always Just Beginning….

Coleus leaves, trimmed from the bottom of a stem cutting, have rooted in their vase.

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There is a certain exuberance, a fresh burst of energy in beginnings.  Youth has glamour, vitality. 

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Most plants allow us to tap into that youthful energy as we ‘re-new’ them.

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Cutting back stems stimulates new growth.  Remove flower stems (on plants grown primarily for their foliage) as they develop to keep the plant youthful, compact and vigorous.

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As we approach mid-June, you might assume that spring’s fresh beginnings are behind us for another year.  Not so.  We are always just beginning in the garden.

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This Caladium leaf broke away from the tuber as I was transplanting it into a pot. Caladium leaves with even just a bit of the tuber still on the petiole will root in water.  A new leaf is already beginning to grow (underwater) and once planted into soil, this rooted leaf will soon grow into a beautiful new plant.  A flower is beginning to grow on the left, which I’ll remove before potting up the leaf.

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I am still planting up pots and still planting perennials and herbs out into the garden.

Garden centers still have a pretty good selection of herbs, annuals, perennials and shrubs.  As you might expect, many of the starts sitting in greenhouses and garden centers are getting overgrown and pot-bound.  They demand a bit of skillful handling to perform their best.

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I bought several pots of oregano a few weeks back.  They were already overgrown, leggy, and some already had flower buds forming.  I didn’t get to use them for my intended purpose at the time, and they’ve been sitting in the nursery.

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Do you see the new growth emerging from below the cuts on some of the stems?

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But I did cut a few stems from each plant, not quite two weeks ago, to share in an arrangement.  And where I trimmed them back, new growth is already bursting forth.  New growth has appeared lower on the remaining stems, and new growth has popped up from the roots.

Now, I expect that the cut stems may have sprouted a few roots in their vase, too.  They can be tucked into a pot of soil or a prepared bed and allowed to grow on.  Stems that have already formed flower buds may root more slowly or may not at all.  But oregano grows in the mint family.  All of the mints are immensely robust.

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If you have the chance to pick up a few late season plants at the nursery, then consider cutting back those leggy stems right away.  Root them if you wish, discard them if you must.  But understand that by cutting away the top growth, you stimulate the plant to immediately send out fresh new growth.

Cutting back, or pinching back, stimulates growth hormones at all of the leaf nodes below each cut.  The plant needs its leaves to produce food, and is anxious to replace those lost.

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In the garden, old growth is always falling away and returning to the soil even as new growth emerges. It is a continuing cycle of growth,  and the decay that fuels new growth.

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When you plant the start, notice if it is already ‘root-bound.’  If the roots have grown into the contours of the pot you know they have been crowded and stressed.

Water the plant well, and then take a moment to tease out the crossed roots on the bottom of the root ball.  Gently tug some of the roots along the sides loose so they can begin to grow out into the soil.  Without being rough,  understand that pulling the roots out a bit, even trimming off the bottom inch of the root ball if it is congested, will stimulate new root growth.

Just be careful to water the plant in well,  offer some nutrition,  protect it from fierce sun for a few days, and let it establish itself.

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Ready to grow on, this oregano has found a new home.

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I bought a beautiful but leggy coleus and immediately took cuttings last week.  It is wise to trim the bottom pair of leaves from the stem before rooting it in water, but the leaves were so beautiful I hated to throw them away.  So, I stuck them into a tiny jar of water to enjoy until they either rooted or faded.  I’ve had to refill the jar with drips from the sink twice a day as the leaves have proven thirsty.  But they rewarded me with roots!

I am often re-working established pots and don’t have room to dig a hole large enough for a big root ball.  Cuttings are a perfect solution.  A much smaller hole will embrace the smaller root system of a newly rooted cutting or recently rooted tuber.

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New Caladium roots; this leaf is ready to plant into a potted arrangement where I want a little color in the shade.

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You might also try dividing up a newly purchased plant.  As long as you can cut or pull apart rooted stems, those rooted stems will soon grow back into full plants.

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I pulled apart 4″ pots of Dichondra and Verbena into several divisions when planting up this basket.  Annual Verbena often grows new roots from any stem in contact with the soil and can be snipped away, its roots pulled out of the pot, and planted separately.  Each division will now take off and grow into a full sized plant.

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A stem cutting from an old plant, rooted, becomes a new plant.  A division of an old perennial, replanted, becomes a fresh new perennial.

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Larger potted perennials can often be split into divisions and planted in much smaller holes.

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Yes, it seems counter-intuitive, paradoxical, maniacal and cruel.  All of that cutting, pulling apart, breaking pieces away and gouging out the ‘eyes’ of tubers leads to a plant’s re-invigoration and renewal.

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Keep planting, keep coaxing your plants to grow to their full potential, and keep your own gardener’s eye and outlook fresh, too.  Try a new plant, or a new combination of old plants.

Try a new gardening skill.  Empty out some old pots and begin again with fresh soil and fresh ideas.

We keep our excitement alive when we are always just beginning.

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Can you spot the dragonfly?

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Woodland Gnome 2019

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“In the beginner’s mind there are many possibilities,

but in the expert’s there are few”
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Shunryu Suzuki

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Daucus carota subsp. sativus, flowers grown from a grocery store carrot ‘planted’ this spring.

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“Moment after moment,

everyone comes out from nothingness.

This is the true joy of life.”
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Shunryu Suzuki

 

Green Thumb Tip # 22: Do the Math

Green Thumb Tip # 21: The Mid-Summer Snack 

Green Thumb Tip # 23: From Small Beginnings

 

 

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Dry Shade Solutions

Epimedium blooms in late April and May.  These leaves often persist through winter.

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How do you turn the dry, shady areas beneath trees and large shrubs into beautiful garden spots lush with color and texture?  That is one of the toughest challenges for many gardeners.  Most ornamental plants want plenty of sunlight and moisture to thrive.  What to do when the thirsty roots of large woodies soak up the moisture from the soil, and their dense canopy cuts off the sun?

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Athyrium niponicum grows with Saxifraga stolonifera in dry shade under a hedge of large shrubs, just a few inches from our driveway.

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Many of us gardening in established neighborhoods face this challenge.  Our shady spots may be under trees, near foundations, in the shade of a neighbor’s home, or around overgrown shrubs.  If we try to maintain a lawn, it’s thin and patchy.  Weeds invade where grass is slow to grow.

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Gravel makes for a very good mulch over newly planted areas, especially on sloping ground.

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If we give up and do nothing, then we’re left with these ugly, bare spots in our yard that may even begin to erode after heavy rains.   There are ways to work with these areas to transform them from bare to beautiful.

Luckily, there are some reliable perennials that will grow well in dry shade if we give them just a little encouragement.  A useful garden mantra, ‘Right plant, right place!’ is the first key to success in dry shade.  We can also make the spot a little more accommodating and dress it up a bit with some simple infrastructure.

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Have you ever noticed how the ground under a rock is cool and moist?  Rocks, bricks, pavers and gravel all help hold moisture in the soil.  Using these to border and build your planting area will help conserve moisture and provide cool, moist places for the roots of your shade perennials.

Simply laying a single layer of landscaping bricks around the area you plan to cultivate begins the garden making process.  You can also use large rocks,  cinder blocks, wood, or even shallow pots.  If you use cinder blocks or pots, fill the openings with compost or potting soil and plant them up, too!

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The stump garden begun in 2015 with a pair of ferns has grown into this beautiful section of our fern garden, as it was in May of 2018. Once begun, gardens tend to expand.

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After you outline the new bed, spread a few inches of compost to improve the soil, hold moisture and provide a little more depth for planting the roots of new plants.  You can’t dig it in if you are planting over the roots of a tree or large shrub, but don’ worry.

Earthworms and other invertebrates in the soil will appreciate the compost and move it down into deeper layers of soil for you.  Adding an inch or so of fresh compost each spring will help improve the soil further with each passing year.  If there are weeds or grass in the area already, then lay some paper grocery bags or several layers of newsprint over the existing vegetation and then cover the paper in compost.

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Butterfly garden in March 2012, trimmed, weeded, and with a fresh topping of compost.

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Care must be taken to not bury the woody roots too deeply.  They don’t like that!  You also can’t pile compost or mulch up the woody trunk of a tree without harming it.  ‘Mulch volcanoes’ climbing tree trunks and burying roots invite disease and weaken a tree.    Keep your new layer of compost a few inches away from the root collar and trunk of any nearby trees or large shrubs.

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If you can only dig a few inches deep in an area where you want to place a well rooted plant, consider partially burying an attractive clay pot.  If you can enlarge the drainage holes without breaking the pot, do so and allow the plant’s roots room to escape and find their own way deeper into the soil.  Planting this way can also protect tasty plants from moles and voles.  I sometimes use this strategy for tender Hostas and Caladiums, that want to stay moist all of the time.

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This experimental raised bed under a dogwood tree is bordered with hypertufa planters and planted with a combination of hardy Begonia and ferns, with a few Caladiums planted each spring.

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The pot helps you create a soil ‘microclimate’ for these particular plants.  Those pots also help other plants near them.  Unglazed terra cotta can absorb and hold water, releasing it back to the soil and roots as needed.  Likewise, if you place decorative pavers, stones, planters, etc. within the bed, they will also help to hold moisture and roots can grow under them.

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“Soil security”

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If you are planting on a dry, shady slope, use this idea to create terraces.  Each terrace will hold some of the rain water that otherwise would simply run off.  Planting behind the pavers or timbers used to create each terrace offers a moist spot for roots.  I’ve also used pieces of broken pots to create planting niches on  a slope.  Once the roots grow in, after a season or two, you can often remove the broken pot to use elsewhere.

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The terraces help stop erosion, holding moisture behind the stones long enough that it sinks in rather than just runnimg off.

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Choose plants in small pots.  Given a choice between a 2″ pot and an 8″ pot, choose the smallest size available.  You may not be able to dig a very large hole, and the smaller root balls will be easier to plant.  Sometimes you can knock a new plant out of its pot and divide it, then plant the smaller sections, with their roots.  Check to make sure that each crown or stem has some roots attached before separating it from the parent plant.  This will work with many vines, with Hostas and with many ferns.   You can cover more ground initially with fewer new plants by dividing as you plant.

Use a sharp, narrow digging tool.  You might use a butcher knife, a hori hori, or a narrow trowel to dig out small areas between roots for new plants.

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Larger potted perennials can often be split into divisions and planted in much smaller holes.

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Also choose a couple of plants that will quickly spread out as ground cover.  Some plants, like Lamium, or dead-nettles, will grow quickly and strike roots at the leaf nodes.  This is a good strategy for plants to survive in dry shade, because they have lots of roots supporting their stems, leaves and flowers.  Once you have this established, you can easily dig up divisions, with roots, to move around.  Vinca minor will also grow this way and bloom each spring.  These plants can become invasive, so plan to keep their growth contained so they don’t overwhelm other plants in your scheme.

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Ferns and Lamium grow in one of the shadiest areas of our garden, below a stand of hazel trees.  From this small beginning in 2014, the Lamium spread out to cover a very large area. It grows a bit further each year, carpeting a dry, shady area where its needs are met.

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Plants like Ajuga and Saxifraga spread by stolons.  Each rosette of leaves strikes its own roots, but several stolons, or runners, will radiate out from each plant, forming a new little plant at the end of each of these creeping ‘stems.’  A thick mat of plants will form within a few years.  You can dig up any rosette, once it has a few leaves, and transplant it to another area.

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The Lamium spread to cover the entire area after just a few years.

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There are a surprisingly large number of flowering plants that will grow in ‘dry shade.’  Some will need moist soil for the first year or two as they establish, and then once their roots grow deep, they can survive on their own without a lot of extra water during dry spells.  Native gingers, hardy Cyclamens, ivies, Hellebores, Pachysandra, Liriope, Epimedium, perennial Geranium macrorrhizum, and some spring bulbs like Hycinthoides (Spanish bluebells) and Muscari will thrive.

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Saxifraga spreads by stolons

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Italian Arum thrives in dry shade from September through May, but will disappear during the summer.  You might balance it with Hostas , which will emerge just a few weeks before the Arum fades, or with Caladiums.  Mayapples, Podophyllum, will appear in March and disappear by July.  But their striking leaves add drama to a planting in the shade.  Highly poisonous, deer and rabbits won’t touch them.

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Mayapples and Vinca cover the ground in this narrow area under large Azalea shrubs.

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Hostas will grow well once established, thought they can’t stay dry for extended periods of time.  Heucheras and Tiarellas will also grow well in partial shade.  They will bloom better if they get some sun in the early spring.  If you have rabbits or deer browsing in your garden, you will need to protect the Hostas and Heucheras with animal deterrents.

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Although we may think of ferns as plants for moist areas, some will perform well in dry shade, too.  Native Christmas ferns, Polystichum acrostichoides, Japanese painted ferns, Athyrium niponicum, and autumn fern, ‘Brilliance’ are among those that do very well in dry shade.

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Plants growing in dry shade will most commonly bloom in late winter and early spring, before the leaves on deciduous trees grow back into a thick canopy.  During the rest of the year, the garden depends on foliage color and texture for its interest.

When designing for dry shade, consider the various leaf colors, textures, plant heights, and shapes to design a harmonious composition.  You might create a very restful, harmonious scene by repeating the same limited palette of plants over the entire area.  You can also create drama with dramatic foliage plants like Caladiums and Hosta.

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Many dry shade plants are evergreen, holding their places throughout the year.  But plan for winter when deciduous ferns die back, and also for the months after spring ephemerals disappear.  As in other parts of the garden, a little pre-planning allows the display of flowers and foliage to shift and change throughout the gardening year.

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As our climate shifts and summers grow hotter, shade gardening will become more important for maintaining our own health and comfort.  Large trees help shelter our homes and gardens from summer’s sun.  We may not be able to grow velvety lawns beneath the trees, but we can certainly create beautiful plantings in their shelter.

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As you find tough and beautiful plants that work well in your own microclimate, use them again and again to create a sense of unity throughout your garden.  If these are plants that you can easily propagate or divide, you soon realize that this is a thrifty way to create beauty in those challenging spots in your garden.

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Woodland Gnome 2019

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Green Thumb Tip #23: From Small Beginnings

Begonia, growing inside and waiting for a larger pot.

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Spring invites us to treasure the small. 

Autumn frost and winter storms long since claimed late summer’s towering goldenrods and bushy pineapple sages.  The Cannas and gingers and huge elephant ear leaves were cut down months ago, and live on only in memory and photos and dormant tubers resting underground.

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After several months of bare ground, woody stems and largely open space, the smallest bits of new growth excite me with their promise of a new growing season awakening.

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Iris reticulata ‘Rhapsody’

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It is easiest to start again small.  Small flowers from very small bulbs, like grape sized Iris reticulata and I. histrioides.   Small roots on small cuttings, carefully planted into small pots to ‘grow-on’; and small starts in small pots that will move up into hanging baskets and potted arrangements once the weather warms.

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Cut pussy willow stems root easily in water.  I’ve cut the bottoms off of rooted stems to plant, and returned the larger stems to the vase.  From these small sticks, large shrubs may eventually grow.

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From small beginnings, beautiful plants will grow.  I tend to order bulbs and corms, tubers and rhizomes, seeds and roots, then plant them myself to watch them grow.  A box came in late February filled with a treasure trove of Iris roots.  They may not look very promising, straight out of the package, but the potential for beautiful, healthy growth is there if you handle them properly.

I ‘heeled them in’ in a bin of rich, moist potting soil in the basement, while their roots re-hydrated.  After several days, once the plants had re-awakened and were ready to grow,  I moved each plant into a larger pot, filled with amended potting soil to grow on for the next month or two.

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These are Iris siberica and Iris chrysographes.  They want moist soil with excellent drainage and benefit from some extra perlite and some Plant Tone mixed into good potting mix.

Hardy perennials, they want as much sun as they can have on these early spring days.  Potting them first, before planting them into the garden, gives them a chance to grow and develop a great root system in comfort and safety, away from curious squirrels and hungry voles.  Their leaves are tiny now, but will stretch to a couple of feet high by summer.

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I’ve been busy at my basement planting bench this week, potting up rooted cuttings and a few bags of Zantedeschia bulbs a gardening friend gifted to me last fall .  Next week, I’ll start our saved Caladium tubers.

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Oxalis grow patiently in the garage, among our summer pots, waiting their turn to grow out in the sunshine.  Start Oxalis from tubers any time of year.

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I’m waiting a little later in March to start them this year, mindful of how cold our spring was last year.  The Caladiums wanted space outside in the sun long before it was warm enough to plant them out.  Better to start slowly, in small steps towards summer’s leafy bounty.

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As spring creeps, hesitantly, into the garden, hard lessons learned in years past make me a little hesitant, too.  Last night dipped into the mid-20s, here.  The sun was out this afternoon when I walked the garden, noticing not only the new growth but also the work still needed to properly welcome spring.

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This special Hellebore disappears in the shade. It is only when I seek it out, and turn up its face, that I can appreciate its beauty.

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Perhaps it’s a good thing that I’ve waited this long to rake up winter-blown leaves and finish the pruning.  Once woodies begin to bud and bloom, cold nights like these can ruin tender petals and leaves.  I’ve learned its wise to not rush the season, but to wait and see what more winter weather may come our way.

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The earliest of our daffodils have begun to open.  They are tough, and bounce back from cold nights and late snow.

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Rather than rushing, this March I’m going to savor what comes into leaf or bloom each day.  Each small flower, every tiny bud swelling on a branch, every bit of emerging perennial pushing up through the muddy earth is beautiful.

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Acanthus ‘Whitewater’ is ready to grow.

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Perhaps it is better to savor spring slowly; to re-discover the treasures of awakening plant life  in miniature.

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The smallest parsley seed holds wonder and promises magic.  From small beginnings, beautiful gardens will surely grow.

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Begonia starts, waiting….

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Woodland Gnome 2019

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“Rejoice in small things

and they will continue to grow”
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Slaven Vujic

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“This is the only advice I offer you.

Pick the small thing, and carry it on.

Let it change your life.” .

Anna White

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“First achieve small things

and you will achieve great things ultimately…

and no one will forget.”
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Bidemi Mark-Mordi

Green Thumb Tip # 22: Do the Math

Green Thumb Tip # 21: The Mid-Summer Snack 

 

 

 

Green Thumb Tip #22: Do the Math

Two Athyrium ‘Branford Rambler’ that I picked up on an August clearance sale on Saturday are ready for division.

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Every garden center offers deals in August to move out the last of their summer stock so there is room for all of those fall pansies and chrysanthemums already on their way.  You will find a very good selection of all of the major genera at most good nurseries, but now marked down 20-40%.

They may be pot bound and perhaps a little sun scorched; no worries.  With a little effort and skill you can increase that small investment many fold.  With a perennial, it is always the roots, crowns, rhizomes, tubers, or stolons that matter.  These are the parts that survive and increase year to year.  The flowers and foliage come and go with the seasons.

This late in the season, the bargain perennial you score on discount has likely had many weeks to grow and increase in its nursery pot.  That means that you can divide it into several pieces, re-pot them and grow them on so that you end up with several beautiful plants before fall really takes hold.  We still have a good eight weeks of summer growing weather, here in coastal Virginia, before we even think about a first frost.

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These will grow into dense ferns, as this Japanese painted fern hybrid spreads itself around.  I like the red stems.  Because this is a deciduous hardy fern, it will fade away over the winter.  But come spring, it will reemerge with red fiddle heads.

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I found two Athyrium ‘Branford Rambler’ ferns this weekend on clearance at 20% off their original price.  This is a  lady fern hybrid produced from a cross with a Japanese Painted fern.  The central stem of each frond is deep red, and I expect the fiddle heads next spring to be deep red, too.  These ferns like moist acidic soil and full to partial shade.  This fern is known for spreading rapidly, and will grow to about 24″ high and wide.

I bought these ferns because I’m planning to design some winter perennial and bulb pots in October, and think that fern fronds emerging through the daffodils will look terrific!  I want some small divisions of a Japanese painted fern hybrid to plant among the bulbs, for their red fiddleheads, and I’ll finish the pots with Violas or Heuchera divisions.

When deciding which perennials to buy this time of year, compare all of the available pots of whatever plant you are considering.  Look for ones that have multiple crowns or divisions which can be pulled apart.

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You will need several clean, empty pots that are deep enough to accommodate roots of your divisions, some fresh potting soil, a clean knife or hori-hori and space to work comfortably.  I also have something to line the pots to hold the soil, like a coffee filter or paper toweling.  Your new plants will only live in these pots for a few weeks, so this is a temporary pot and can be a little rough.

I begin by guessing how many divisions are possible from the plant, and then prepare a pot for each by lining it with paper and filling it about 1/4 full of fresh potting soil.  Next, I massage the nursery pot with the mother plant to loosen up the roots, and then gently slide the root ball out of the pot.  Always work with a well-moistened root ball.  If the plant comes home dry, water it well first thing, and give it a few hours before beginning any division.

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As soon as you study the roots and plant structure you will likely see where you can divide the plant so that each new division has both leaves and roots.   If the plant has rhizomes, tubers or stolons, make sure that each division has a section attached to both leaves and roots.

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Some plants, like my ferns, can be gently pulled and teased apart by hand.  Other plants may need to be cut into divisions.  Make sure that your blade is clean before you begin work on each plant by wiping it with a Lysol or other disinfectant wipe, washing it in hot soapy water, or even spraying it with a spray disinfectant.  This will control the spread of any bacteria or fungi  that may be on your tools.

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Notice where there are spaces between sections where you can begin to pull the plant apart.

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I like to work as quickly as I can so the roots don’t dry out, and usually pot up each division as I cut it free.  Position the roots in the new nursery pot so that the plant’s crown will be about an inch below the rim of the pot, and gently fill around the root ball with fresh potting soil.  Firm the soil as you go so that the division will stand up and not flop over and the soil is firm around the roots.

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Water each newly planted division after you pot it, keeping in mind that your fresh potting soil may not be holding much water.  It is good to do this on a rainy day and let the divisions sit out in a gentle rain.  Always take care to keep newly divided perennials in a shady place for at least a day as they recover and settle in their roots.

I wouldn’t put even full sun perennials back into full sun for at least a week, to give them a chance to adjust.  Since I’m working with ferns, I’ll put them in full shade for the first week or so, and then move them to brighter, partial shade.  It is very important to keep the soil moist, but not wet, as plants begin to grow their new root systems.

I like to water newly divided plants with Neptune’s Harvest seaweed and fish emulsion right after they are divided, and then every couple of weeks as they grow on.  You might also sprinkle the soil with Osmocote time release fertilizer to help the plants recover and begin growing again.

The plan is to stimulate growth over these last few weeks of summer, and then plant the divisions into garden beds or pots several weeks before the first frost.  You want to allow a few weeks for any newly planted perennial to grow roots beyond the planting hole, out into the surrounding soil, before the ground freezes.  This helps reduce heaving when the ground freezes hard, because the plant is anchored by its roots.

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I bought two plants, and ended up with nine divisions.   This is why I always save plastic nursery flats and nursery pots that come home with me on my plant hunting trips.  There are so many ways to reuse these very useful tools!  All nine of my new divisions are nestled into sturdy flats, where they will be easy to move and manage as I grow them on through September.

Unless you have unlimited funds for gardening, do the math.  Shop the seasonal bargains, and then use those bargain plants to make many more.  Whether you divide them, take cuttings to root from leggy plants, or gather their seeds- many plants on sale now offer abundant material that a thoughtful gardener can use to increase her collection and fill her garden with more texture and color.

Plant more plants!

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Woodland Gnome 2018

“Green Thumb” Tips: 

Many visitors to Forest Garden are amazing gardeners with years of experience to share.  Others are just getting started, and are looking for a few ‘tips and tricks’ to help grow the garden of their dreams.

I believe the only difference between a “Green Thumb” and a “Brown Thumb” is a little bit of know-how and a lot of passion for our plants.

If you feel inclined to share a little bit of what you know from your years of gardening experience, please create a new post titled: “Green Thumb” Tip: (topic) and include a link back to this page.  I’ll update this page with a clear link back to your post in a listing by topic, so others can find your post, and will include the link in all future “Green Thumb” Tip posts.

Let’s work together to build an online resource of helpful tips for all of those who are passionate about gardens and gardening.
Green Thumb Tip #16: Diversify!
Green Thumb Tip #17: Give Them Time
Green Thumb Tip # 18: Edit!
Green Thumb Tip #19:  Focus on Foliage
Green Thumb Tip #20:  Go With the Flow
Green Thumb Tip #21:  The Mid-Summer Snack

 

Green Thumb Tip #21: The Mid-Summer Snack

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A snack makes us all feel a little better, doesn’t it?  If you want the plants you tend to have that ‘Wow!’ factor as summer relentlessly wears on, give them a tasty pick-me-up.  There are several good choices, and it’s easy enough to add care and feeding into your routine.

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Although plants ‘make their own food’ from sunlight, carbon dioxide and water on a daily basis, they also need an assortment of other elements and minerals for optimal growth.  Plants rooted in the Earth likely find most of what they need dissolved in the soil.  When we grow a plant in a pot or basket, anchored in potting mix, we need to provide those important minerals and extra elements to support their growth.

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Nitrogen is the most important element to support lush growth.  Phosphorous and potassium (K) support blooming, fruit formation, and healthy tissue development.  You’ll find the percentage of these elements listed on any fertilizer you might buy, in the formulation of N-P-K.  A fertilizer labeled 10-10-10 is a balanced fertilizer.   Since only 30% of the product is labeled as one of the key elements, you know that 70% of the product is filler, which may contain other necessary elements and minerals.

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Still waiting for the first blooms to appear on this new Begonia….

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But your plants might need a ‘pick me up’ that has more of one element than another.  You will find lots of specialty organic and inorganic fertilizers formulated for different uses.  Savvy gardeners would never  apply a standard lawn fertilizer to a flowering potted plant, for example.  Read the labels on the products at your favorite nursery or big box store to find the right product for the right plant.

When you potted up your plants in the spring, you likely added a little Espoma Plant Tone or Osmocote to the mix.  Or maybe you used a potting soil advertised to have fertilizer already mixed into it.  That is fine, but most of the pre-mixed potting soils feed for roughly 90 days.  That means that they’re beginning to lose the umph right as we hit the heat and dry spells that summer always brings.

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Many products are water soluble and can be mixed into a watering can and applied as a soil drench or foliar feed.  These give the quickest ‘pick me up’ results.  I learned about Neptune’s Harvest from a trusted nurseryman many years ago, and have used it ever since.  This is my ‘go to’ product for most pots and baskets out of doors, and I use it at least a couple of times a month in June through September.

The numbers on this fertilizer are relatively low (2-3-1), in part because it is an organic fertilizer made from seaweed and fish emulsion.  Yes, it smells terrible.  But because it is made from these organic materials, Neptune’s Harvest also delivers many trace minerals for stronger, healthier growth.

Plants can access the nutrition very quickly and show results very quickly.  Plants show better leaf color, put on stronger new growth and set more blooms after a dilute application of this mix.

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For plants indoors, and those plants I’m growing mainly for their flowers, I prefer to use Orchid Plus plant food (20-14-13) from time to time.  This is a reliable way to induce the plants to set buds and produce flowers.

This is one of those ‘light blue’ chemical fertilizers, and I mix it up much weaker than the package suggests.  If you feed too frequently, a mineral residue will build up on the pot, or even the potting soil.  Use this when watering only about once every two to three weeks.

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Plants are under a lot of stress in our area right now.  Rain has been scarce in our neighborhood, and temperatures regularly reach well above normal.  The garden looks a little tired and wilted.  The first line of defense is hydration.

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Plants are mostly water, and water pumps through their tissue from the roots, up through every cell until water is released as vapor through the leaves.  When a plant wilts, it means that its cells are collapsing for lack of enough water.  Some plants can perk back up once water is available  again; others won’t.

Water helps in the short term, and in this sort of weather, small pots or baskets may need hydration every morning and evening.

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Without sufficient water, their colors look dull, leaf edges may burn, and growth slows down.  New leaves and flowers may be small.  It’s not a very pretty sight!  If you have time to do nothing else, at minimum keep plants as hydrated as you can until it rains again.

Too much water causes its own set of problems, including root rot.  As in all things, we seek balance. 

Keep in mind that when there is a lot of rain and frequent watering, soluble fertilizers will wash right out of the soil.  This is another reason to give light supplemental fertilizers on a fairly regular basis, while plants are responding to summer’s bright light and warmth with active growth.

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You may have noticed that each day grows a little shorter, now that we’re nearly to August.  We’ve enjoyed a few cool nights, and the garden is preparing for its late summer show.

It’s a challenge to help our plants survive right through the season and have enough strength for a beautiful late summer and autumn display.  We have to keep them actively growing despite the challenges our weather may present.

Regular care and careful observation  are the secrets to success.  Hydration, feeding, deadheading and a little grooming ensure that our gardening investments pay generous dividends in beauty.

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Woodland Gnome 2018
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Green Thumb Tip # 14: Right Place Right Plant
Green Thumb Tip # 15: Conquer the Weeds!
Green Thumb Tip #16: Diversify!
Green Thumb Tip #17: Give Them Time
Green Thumb Tip # 18: Edit!  
Green Thumb Tip #19: Focus on Foliage  
Green Thumb Tip #20: Go With The Flow

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Green Thumb Tip #20: Go With the Flow

Bronze fennel foliage, wet from an early morning watering, with Verbena bonariensis

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There is rhythm to life in the garden.  Much like waves of warm briny water crashing along a sandy beach; so too waves of life appear in the garden, peak, and then quietly disappear.  Part of a gardener’s education, when working in a new garden, is sensing and recognizing a garden’s ‘waves’ of life.

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Wisdom teaches us that much of our frustration and unhappiness is connected to our desires.  There are things we want that we can’t have in the moment.  There are things we love that we fear losing.  There are things we care about that we see passing away before our eyes.  All of these concerns can become causes of our suffering, to some degree, as we work with our gardens.

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Japanese beetles have found the Zantedeschia.

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But our feelings can shift when we take the broader view, acknowledge the rhythms and challenges, and plan ahead to address them.

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When we plant early spring bulbs we know that we’ll be left with their foliage for a few weeks after the flowers fade, and then even that will yellow and fall away.  What will grow up in their place?

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Daffodils and Arum italicum fade as Caladiums, hardy Begonia and ferns grow in their place.

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When we plant roses, we can expect a glorious flush of blooms in May, followed by much that needs to be pruned away.  What happens if blackspot or Japanese beetles attack the leaves?  Will our shrubs bloom again during the season?

We can plan to have other perennials or shrubs nearby to take attention away from resting rose shrubs.

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Crape myrtles have just begun to bloom in our area.

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And what happens when a tender perennial fails to appear in spring?  Is there a gap in the border, or do we have something waiting to grow in its place?

We understand the larger cycles of the seasons and how they affect the life in our garden.  First frost claims much of our garden’s growth, and the beds lie fallow through the winter.

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January in our forest garden

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But there are larger cycles still, as woodies grow and shade out nearby perennials, or a tree falls and changes the light in the garden, or plants fill in, creating dense mats of growth.

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Crinum lily comes into bloom amidst Iris, Thyme and Alliums.

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Gardening teaches us flexibility and resilience.  Resistance to the cycles and happenstance of nature tightens us up inside.  We might feel anger at the voles eating through the roots of a favorite shrub, or the Japanese beetles ruining the leaves of a favorite perennial.  How dare they!

But these things are always likely to happen.  We can’t fully prevent the damages that come along when we work with nature.

I found a small Hydrangea shrub, that I’ve been nurturing along from a rooted cutting, grazed back by deer last week.  No matter how protected it might be, or how often I’ve sprayed it with repellents, a doe came along after a rain, and chewed away most of its leaves.

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Successful gardeners learn how to ‘go with the flow.’  We do the best we can, follow best practices, and have a plan or two up our sleeves to work with the natural cycles of our space.  Even so, we learn the lessons of impermanence in the garden.

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Working to thwart the voles, I am experimenting with planting Caladiums into pots sunk into the bed. I’m also doing this in another bed with tender Hostas.

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Every plant isn’t going to survive.  But we keep planting anyway, trying new things to see what will thrive.

Some things we plant will grow too much, and we’ll have to cut them back or dig them up to keep them in bounds.  Weeds come and go.  Insects chew on leaves and voles chew on roots.

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We stand by, observing this incredible ebb and flow of life, and take our place among the waves.

Gardeners feel the ebbs and flows, too.  We may feel energized in spring and plant lots of new roots and shoots, seeds and plugs.  But then summer heats up, the grounds dries out a little, and we are left scrambling to keep it all watered and tended.

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Suddenly there is stilt grass sprouting up in our beds and pots.  The lawn is growing overnight, and the shrubs need pruning.

As our own energies come and go, we find a rhythm to keep up with maintaining our gardens while also maintaining ourselves.  We can’t stop the ebb and flow in our garden any more than we can stop the waves crashing on the beach.

But we can lighten up, enjoy the scenery, and take pleasure in the ride.

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Woodland Gnome 2018

What I’m reading this week:                            

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“Enjoying the simple beauty of plant against rocks, and cultivating the distinctive forms of alpine plants, is the heart of traditional rock gardening, ranging from gardeners who obsessively recreate the look of mountaintop, to those who carefully cultivate individual specimens of plants into breathtaking peaks of loom not to be matched by anything else in the plant world.”               

Joseph Tychonievich from Rock Gardening, Reimagining a Classic Style

(Thank you, Joseph, for your entertaining talk on Saturday morning!)

“Green Thumb” Tips: 

Many visitors to Forest Garden are amazing gardeners with years of experience to share.  Others are just getting started, and are looking for a few ‘tips and tricks’ to help grow the garden of their dreams.

I believe the only difference between a “Green Thumb” and a “Brown Thumb” is a little bit of know-how and a lot of passion for our plants.

If you feel inclined to share a little bit of what you know from your years of gardening experience, please create a new post titled: “Green Thumb” Tip: (topic) and include a link back to this page.  I’ll update this page with a clear link back to your post in a listing by topic, so others can find your post, and will include the link in all future “Green Thumb” Tip posts.

Let’s work together to build an online resource of helpful tips for all of those who are passionate about gardens and gardening.
Green Thumb Tip # 13: Breaching Your Zone
Green Thumb Tip # 14: Right Place Right Plant
Green Thumb Tip # 15: Conquer the Weeds!
Green Thumb Tip #16: Diversify!
Green Thumb Tip #17: Give Them Time
Green Thumb Tip # 18: Edit!
‘Green Thumb’ Tip:  Release Those Pot-Bound Roots! from Peggy, of Oak Trees Studios

 

Green Thumb Tip #19: Focus on Foliage

New growth on Mahonia

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A garden built from woody trunks, stems, branches and beautiful leaves will last through the seasons.  Abundant foliage offers cool shade and privacy.  It screens the view, cleans the air, muffles outside sounds and protects the soil, all while offering a sense of enclosure.

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Crape Myrtle

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Flowers can be exciting, for a while.  But they fade or explode into a heap of petals all too quickly.  Their perfumes entice us, but flowers aren’t enough to create a lasting garden.

Better to focus on foliage plants for a garden’s flesh and bones, and appreciate ephemeral flowers as seasonal accents.

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Once one gets past wanting a garden filled with fragrant flowers, there is a beautiful palette of foliage waiting for the curious garden designer.  In fact, I’ve been reading an intriguing book on garden design by Karen Chapman and Christina Salwitz  called Gardening With Foliage First:  127 Dazzling Combinations That Pair the Beauty of Leaves With Flowers, Bark, Berries and More.

The authors have photographed and described associations of shrubs, perennials, vines, ferns and grasses that will grow well together for a variety of climate zones and locations.  The color combinations are striking, and the authors discuss how the association will change as the four seasons unfold.

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Colocasia ‘Mojito’ in August

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One of the nicest things about designing with foliage is the wide selection of colors and textures in the plant palette.  And with woodies and perennials, the plants grow larger and more complex with each passing year.

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A native redbud tree seedling has appeared by our drive. This tree can eventually grow to 20′ or more.

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We plan and plant our gardens in at least four dimensions.  We create out door ‘rooms’ by creating ‘walls’ with large shrubs and trees, or perhaps vines growing on a pergola or trellis.  Our carpet is a selection of low-growing plants and ground covers.   Some of us cultivate a simple carpet of moss.

The leafy canopy of trees offers us a bit of shelter and shade, enclosing our garden from above.   So we are planting foliage plants of varying heights to serve different purposes.

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Red Buckeye, Aesculus pavia, is a native, deciduous tree in coastal Virginia that will grow to about 25 feet.  It often grows as a multi-stemmed shrub, growing a bit broader with each passing year.

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Perennials tend to also spread, growing wider with each passing year.  A plant or two this year may propagate itself into two dozen plants within just a season or two.  Even within the short span of a single season, a small tropical plant purchased in a 3″ pot may grow to be 5′ tall and wide before frost.

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Our garden is also constantly changing over time, the fourth dimension.  Sculptural stems and branches cover themselves in buds, then ever expanding leaves.  The leaves grow and change colors as the season progresses, often developing intricate veins or spotted markings as they mature.

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Begonia

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Eventually, we are enclosed in leaves and woody growth before winter sweeps the season’s tender growth away.  Leaves glow with autumn color, then fall.  Perennials die back to ground level, harboring the promise of next year’s growth in their roots and crowns.

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It is this foliage framework which demands a garden designer’s attention. This is where we make our main investment of time and treasure. 

When beginning a new garden, one selects and plants the trees first to give a head start on growth.  When renovating a garden, it is wise to replace tired shrubs, or rejuvenate them with heavy pruning before the season’s new growth begins.

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Once we have good woody ‘bones’ in place, then we fill in the ground covers and herbaceous plants to occupy the mid-level spaces .

Flowers are the ephemeral elements which can come- and go- with the seasons. Whether we choose blooming shrubs, perennials with a short season of bloom like Iris, or even if we plant annuals for several months of bloom;  the flowers themselves are very short-lived.

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Japanese painted fern emerges among the Arum italicum, and is interlaced with creeping Jenny.  Bulb foliage will die back soon.  You can just see the new leaf of a hardy Begonia catching sunlight like a stained glass window to the right.  They will grow to about 18″ tall before their tiny pink flowers emerge.

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Many traditional gardens rely on foliage for all of their seasonal interest.  This is easy to do with herbaceous perennial foliage plants like ferns, Heucheras and Colocasia.  But a ‘foliage only’ garden doesn’t mean a monochromatic garden.  Beautiful contrasts and color combinations may be painted with colorful leaves.

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And stunning beauty may be created with little more than variations of texture and form.  Leafy plants swaying in the breeze bring life and movement to the garden.

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Lamb’s Ears, Stachys Byzantina. is grown more for its velvety gray leaves than for its flowers. In fact, many gardeners remove the flower stalks before they can bloom. Bees love it, so I leave them.

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As you plan and plant your pots and garden borders, remember to focus first on the foliage framework.   This will last over many months or years and will grow better with time.

The flowers will come and go, but your garden’s leafy presence will make the lasting impression.

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Woodland Gnome 2018
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“Green Thumb” Tips: 

Many visitors to Forest Garden are amazing gardeners with years of experience to share.  Others are just getting started, and are looking for a few ‘tips and tricks’ to help grow the garden of their dreams.

I believe the only difference between a “Green Thumb” and a “Brown Thumb” is a little bit of know-how and a lot of passion for our plants.

If you feel inclined to share a little bit of what you know from your years of gardening experience, please create a new post titled: “Green Thumb” Tip: (topic) and include a link back to this page.  I’ll update this page with a clear link back to your post in a listing by topic, so others can find your post, and will include the link in all future “Green Thumb” Tip posts.

Let’s work together to build an online resource of helpful tips for all of those who are passionate about gardens and gardening.
Green Thumb Tip # 14: Right Place Right Plant
Green Thumb Tip # 15: Conquer the Weeds!
Green Thumb Tip #16: Diversify!
Green Thumb Tip #17: Give Them Time
Green Thumb Tip # 18: Edit!

 

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Green Thumb Tip #17: Give Them Time

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We are just finishing a harsh winter, and find ourselves in the midst of a chilly, slow spring.  Most of our woodies and perennials are a little behind the times in showing new growth, according to our experience with them in recent years.  Understandable!

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The Camellias didn’t do well in our cold, windy winter weather.

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We had a few nights in January when the lows dipped a little below 0 degrees F, which is rare here.  We had winter temperatures more like Zone 6, found several hundred miles to the west.  Our woodies and perennials rated for Zones 7 or 8 suffered from the deep, prolonged cold.  And it shows.

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Normally evergreen shrubs, now show extensive leaf damage, with brown and curling leaves.  Bark on some trunks and branches split and some stand now with bare branches.   Those woody shrubs that can easily withstand winter in Zones 6a or colder generally look OK.  But those that normally grow to our south, that we coddle along here in the edge or warmer climates, took a hit.

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I needed to cut back far more dead wood from our roses than any year in memory.  It is a very sad sight to see established shrubs looking so bad here in the second week of April.  Our cool temperatures through March and early April, with a little snow recently, have slowed the whole process of new spring growth, too.

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Some gardeners may be struggling with a decision about whether to replace these badly damaged plants.  Now that the garden centers are finally allowing deliveries of fresh stock, it is certainly tempting to rip out the shabby and re-plant with a vigorous plant covered in fresh growth.

I will counsel patience, which is the advice I am also giving to myself this week!  We invest in woodies and perennials mainly because they are able to survive harsh winters.  While leaves and some branches may be lost, there is still life in the wood and in the roots.

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I was out doing the ‘scratch test’ on a completely bare lilac shrub this morning.  Its condition is still a troubling mystery to us, as several other lilacs, of the same cultivar, are leafing out and are covered in budding flowers.  But this one, on the end of the row, sits completely bare without a swelling bud to be seen.  I scratched a little with my fingernail one of the major branches, and found green just below its thin bark.  So long as there is green, there is life.

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This lilac survived our winter in a pot near the kitchen door. We are delighted to see it in bloom so early. I’ll plant this shrub out in the garden once the blooms are finished. It has been in this pot for several years, after arriving as a bare root twig in the mail in early 2015.

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I want to prune this one back pretty severely, mostly because it is becoming an eyesore.  But my Master Gardener friend strongly advises to give it more time.  She suggests waiting until early June to make life and death decisions on trees and shrubs, to give them time to recover.

I may prune the lilac a little, now that the freezing weather here is likely over for the year, and hope that stimulates some fresh growth.

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Japanese Maples have finally allowed their leaves to unfold this week.

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That is what we’ve done with the roses.  We pruned, hard, and we see new shoots coming from the roots on all of our roses now.

There are a few good reasons to nurse our winter damaged woodies back to health instead of replacing them now.  First, our tree or shrub is established and has a developed root system.  Even if all of its trunks and stems are dead, new ones will soon appear from the roots.  This seems to happen every single year with my Ficus afghanistanica ‘Silver Lyre’.  It keeps the shrub a manageable size, and the plant looks pretty good again by early summer.

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F. ‘Silver Lyre’s’ stems are visible beside the Iris leaves. Rated to Zone 7b, it always returns, sometime in May, from its roots.  A Sweetbay Magnolia waits behind it, in a nursery pot.  I want to see some sign of life before planting it.

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Another reason to rejuvenate an established shrub, rather than plant a new one, is economic.  Finding a good sized shrub to replace the old one is a bit of an investment.  Weather and higher fuel prices are definitely reflected in shrub prices this spring.  I’ve felt a little bit of ‘sticker shock’ when looking at prices at area nurseries.

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These Viburnums show cold damage, even while still at a local nursery.

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And even if you buy a new shrub, it is likely to sustain damage during its adjustment time, if you live in deer country.  Shrubs fresh from the grower have been heavily fertilized to induce quick growth.  This extra nitrogen in the plant’s tissue tastes a little ‘salty’ to grazing deer, and makes the shrub that much more delicious and attractive to them.  It takes a year or so of growth before the tastiness of new shrubs seems to decline, and they are ignored by grazing deer.

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I’ve just watched a major investment in new holly trees get nibbled down nearly to the branches by deer in our area.  It is very discouraging, especially if your new shrub is replacing one damaged by winter’s weather!

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This Eucalyptus sometimes sprouts new leaves from its existing trunks in spring. Last winter it was killed back to its roots, but then grew about 6′ during the season.  I expect it to send up new growth from its roots by early May.

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All things considered, I am planning to give our woodies another six to eight weeks, and every possible chance, before declaring them and cutting them out.  It is the humane and sensible approach.  Even though the selection at garden centers this month is tempting, I will wait.

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The view this week at the top of our garden. Still looks rather wintery, doesn’t it?  The southern wax myrtles which normally screen our view, were hit hard by the cold, and a new flush of leaves have not yet opened.

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In this climate, it is generally better to plant in fall, anyway.  Fall planted shrubs get a good start in cooler weather, so their roots can grow and establish the plant in the surrounding soil before summer’s heat sets in.  The selection may be a little more sparse by October or November, but the prices are often better, as nurseries try to clear their stock before winter.

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This English holly, purchased last November, lived in a container over winter, and may be too far gone to save. I planted it out in the garden last month in hope it may recover….

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And of course, you might try propagating replacement shrubs yourself, from cuttings.  I have pretty good luck rooting hardwood cuttings over winter, or greenwood cuttings in spring and summer.  It isn’t hard to do, if you are willing to wait a few years for the shrub to grow to maturity.

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As with so many thing in the garden, it takes time and patience to achieve our goals.  They say that ‘time heals all things.’

That may not be true 100% of the time, but patience allows us to achieve many things that others may believe impossible!

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Our red buckeye tree was knocked back to the ground in a summer 2013 storm.  It lived and has grown to about 5′ high in the years since.

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Woodland Gnome 2018

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“Green Thumb” Tips: 

Many visitors to Forest Garden are amazing gardeners with years of experience to share.  Others are just getting started, and are looking for a few ‘tips and tricks’ to help grow the garden of their dreams.

I believe the only difference between a “Green Thumb” and a “Brown Thumb” is a little bit of know-how and a lot of passion for our plants.

If you feel inclined to share a little bit of what you know from your years of gardening experience, please create a new post titled: “Green Thumb” Tip: (topic) and include a link back to this page.  I’ll update this page with a clear link back to your post in a listing by topic, so others can find your post, and will include the link in all future “Green Thumb” Tip posts.

Let’s work together to build an online resource of helpful tips for all of those who are passionate about gardens and gardening.
Green Thumb Tip # 13: Breaching Your Zone
Green Thumb Tip # 14: Right Place Right Plant
Green Thumb Tip # 15: Conquer the Weeds!
Green Thumb Tip #16: Diversify!
‘Green Thumb’ Tip:  Release Those Pot-Bound Roots! from Peggy, of Oak Trees Studios

 

 

Green Thumb Tip #14: Right Place, Right Plant

Japanese Maple shades a Hosta, “Empress Wu” in the Wubbel’s garden at Forest Lane Botanicals in neighboring York County.

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The first of the new year’s plant catalogs landed in our mailbox earlier this week.  After resisting it for a day, I finally poured a fresh cup of coffee and sat down to savor its promises of  fresh gardening adventures.  My attention was grabbed by a new Hosta introduction, H. ‘Waterslide’ on page 2.  Oh, such a pretty grey-blue Hosta, with long, wavy leaves.

I felt the first tickling sensation of plant lust inflaming my gardener’s imagination.  Before I hardly knew what was happening, I was back on the computer searching for vendors and deals on this new Hosta cultivar.  Then, barely pausing for breath, I was admiring all of the many Hosta cultivars offered by the Avents at Plant Delights Nursery, including their own new introductions this season.  Did you know that some of their Hosta will grow to nearly 4′ tall and wide?  Can you imagine?

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Hosta growing in our garden, with Autumn Brilliance fern, in  2012. The fern survived and thrives. The Hosta was grazed a few too many times, and hasn’t returned in recent years.

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That is how it begins each winter.  With little left to do outdoors, I’m planting imaginary gardens in my mind filled with roses, Hosta, ferns, fruit trees, herbs and lots of vibrant petunias.  I can spend many happy hours reading plant catalogs and gardening books, sketching out new beds and making long wish lists of new acquisitions.  I am always keenly interested in the year’s new introductions across many genera, and spend time assessing the year’s newest Proven Winners.

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Autumn Brilliance ferns, Mahonia and Edgeworthia chrysantha maintain a beautiful presence through the worst winter weather in our garden.  December 2016.

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Now, during the first few years on a new property, one might excuse such extravagance.  But I’m experienced enough to know better, by now, and have determined to impose even more self-discipline this year than ever before.

That, and I literally just planted the last of our spring flowering bulbs, acquired on December 15 on the clearance sale at Brent and Becky’s Bulb Shop.  What was I thinking?   What rational gardener loads up on an additional five dozen bulbs in mid-December, even if they are 75% off?

I used our last warmish day to find spots for every last one of them, including the last of the 50 miniature Iris bulbs ordered earlier this fall.  I rationalized ‘Christmas presents,’ at the time.  And in honesty, a few of my close gardening friends did get a dozen or so of the little guys.  But that still left me with a lot of little Iris bulbs to place.  Where to put them all?

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Winter blooming miniature Iris, February 2017.

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And that, of course, is the point.  I am a naturally curious plant collector.  I want to try growing one or two (or two dozen)  of everything! They all grow beautifully in my imagination.

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June 2017 in our front garden. The tall flowers are grown from grocery store carrots, planted in late winter.  It is nearly time to plant carrots again.  These bloomed for several months last summer.

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But reality sets in as I wander around the garden, pot and trowel in hand thinking, ‘Where can I plant this?’  And that approach regularly gets me into trouble.

Like people and pets, plants have needs.  If you meet their individual needs, they will thrive.  If you don’t plant them in the right place where their needs are met, they mope along looking ratty.

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Or worse, your investment dies.  But that’s not the end of it.  No, sometimes it is even worse when you successfully meet a plant’s needs, and it takes off and shows you its thuggish nature as it takes over all of the surrounding real-estate its hungry little roots can reach!

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Rudbeckia laciniata, a native that feeds wildlife, and an unapologetic thug that has taken over our ‘butterfly garden.’  Yes, there is work to do here before spring….

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Within a season or two, those plants near such an over-achiever get crowded or shaded out.  Without a vigilant gardener ready to prune, divide, dig out and generally keep the horticultural peace, the balance (and a season or two’s previous plantings) are lost.

So I remind myself, as we come into the 2018 gardening catalog season, of what I used to frequently remind my students:  “PPPPP.”  (or, Prior Planning Prevents Poor Performance)  With a bit of creativity, maybe we can work a ‘Planting’ into that maxim…

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Our stump garden has finally taken off from bare mulch, four summers ago.  This photo from spring of 2017 shows how lush it has become over just a few years.

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As our garden fills up, there are fewer and fewer places left to plant anything new.  As little starts and rooted cuttings mature and grow on and spread, there is almost no ‘good’ place left to even consider installing a new bed or planting area in this garden.

Beyond even that practical consideration, this remains a hostile environment for so many beloved garden plants that most gardeners consider ‘normal,’ or even ‘easy.’  Like Hosta.  And daylillies.  And roses and oh, so many other fruiting and flowering plants I would love to grow!

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I can certainly order and plant that beautiful $20+ newest and grooviest Hosta.  If nowhere else, I’ll stick it in a pot and grow it under a shady tree.  But NO!  Just as soon as it begins to really fill out and look great in its new spot, some hungry Bambi will squirm into our garden on a day after the rain has washed our repellents away. The next time I go out to admire and water said Hosta, it will be gnawed off at the soil.

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Native Mountain Laurel blooms here  for several weeks in May.  This small tree remains evergreen all year, with interesting bark and slender trunks.  Poisonous, deer and squirrels leave it strictly alone.

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Thus, we return to, “Right place, right plant.”  You see, I’ve been working sorta backwards all of my gardening life.  (and yes, I’ve enjoyed it, and No, I don’t regret all of those poor planting choices.  I get lucky sometimes.)

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The stump garden, with newly planted Iris, Violas, chives, and Geranium cuttings in October of 2013;  four months after several trees came down here in a summer thunderstorm.

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First, we choose the place to plant.  Then, we analyze what will grow well there, and what we want those new plants to do for us.  Do we need something flowering?  Something evergreen?  Something edible?  A visual screen for something?  Does it fit into a larger planting scheme?

I envy those highly regarded English garden designers, who are commissioned to fill many acres at a time of some posh, historical site.  They have space, and budgets, and walls to hold off the deer.  And, they have deep soil and a perfect climate to fill their garden with roses….

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Late April, 2017, and our Iris fill the front garden.

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But I’m gardening in my imagination again, which is maybe OK this last week of the year.

I’ve made a firm New Year’s resolution to make more realistic plant purchases this coming year, and fewer of them.  I intend to train a new habit of having a spot chosen in advance before any new plant may be ordered or adopted on a whim.

No more vague, “I’ll find a spot for it, I’m sure.” 

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September 2013, and I took a friend’s good advice to try this Edgeworthia.  We sited it well, and it has delighted us with its flowers each winter since.

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This will make my partner very happy.  This is a Forest Garden, and I want to make sure we leave room for the trees, and the people, and for the plants that have already sunk their roots here, to grow.

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Our ‘deer resistant’ garden in February, 2017

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Woodland Gnome 2017
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Green Thumb Tip #13: Breaching Your Zone

It is time to save our favorite Alocasia before our first freeze of the season, tonight.

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We expect frost tonight, the first of the season.   In fact, the forecast suggests that we may have temperatures in the 20s overnight; the result of an approaching cold front and gusty winds from the north all day.

We can’t complain.  Here in Zone 7, we know that frost is possible any time from October 15 on.  We’ve escaped the inevitable for nearly an extra month, and tonight is the night.

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Alocosia ‘Stingray’ in August, with Begonia ‘Griffin’ behind.  Both came inside today for the winter.

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Bringing tender plants in for winter remains one of our annual rituals here in our forest garden.   We procrastinate as long as possible, to give the plants every day possible out in the air and sunshine.   We’ve found that even tender tropicals will survive a few nights in the 40s better than a few days in the garage, and so have learned to wait until we are sure that we have a freeze warning before we gather them back indoors.  Moving them back and forth several times over our long fall really isn’t practical; we wait for the last possible moment to commit.

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Colocasia ‘Mohito’ is marginally hardy in our area. I couldn’t lift this pot, but brought all of the divisions of the plant indoors today.

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Preparations for the ‘great migration’ included doing a little homework to refresh my memory about the lowest temperatures some of our plants can tolerate, before they turn to mush.  Nearly all of our Begonias won’t tolerate any freezing at all.  The hardy ones are mostly dormant, already.

But the Aroids, the Alocasias and Colocasias, have different degrees of cold tolerance.  Unlike Caladiums, which like to stay cozy at 50F or above, some Colocasias remain hardy to Zone 6.

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Colocasia ‘Pink China’ has proven hardy in our garden. It spreads a little more each year and grows lush and reliable from May until November. I expect to find this whole stand knocked down by frost when we come out tomorrow morning.

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When we talk about  USDA agricultural zones, there are three variables in play; all very important for which plants you may grow.  First, dates of first and last frost are pretty standard across a given Zone.  For example, here in Zone 7, we expect our first frost around October 15, and our last freeze around April 15.  That gives us a solid six months of outdoor growing season, which means we can raise lots of different sorts of crops in our zone.  There is sufficient time for a plant to develop, bloom, and ripen fruit.  A few miles to the southeast, nearer the Atlantic, Zone 8 begins.  Zone 8 has later first frosts (November 15) and earlier last frosts (March 15).

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Colocasia have runners, and each runner will create a new little plant. These special stems run just at ground level. This is how a dense stand develops from a single plant. Were you to visit my garden, I’d offer you as many of these little Colocasia plants as you would take!

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So knowing your Zone (updated in 2012,) not only tells you how many weeks of the year you have a 50% chance or greater of having freezing temperatures, at least overnight; it also tells you how cold those temperatures may go.   Here in Zone 7b, we may experience a low between 5F-10F.  Most winters we never drop below the teens, here, but it is possible.  Zone 8 may have temperatures down to 10F, but Zone 9 wouldn’t expect temperatures to drop below 20F.

Knowing this helps me make choices about what to bring inside, where  to keep overwintering plants, and what to take a chance on leaving outside until spring.  When space is limited, hard choices must be made if one wants to share the house with the plants for the next six months!

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Colocasia ‘Tea Cups’ is hardy to Zone 7b. I still brought many of these plants in to hedge my bets, since we are right on the edge….

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If a plant is hardy to Zone 8, we sometimes have success keeping it outdoors when we provide mulch or significant shelter.  In a mild winter, we may not dip below 10F to begin with.   Plants with deep roots may be mulched, or may have a little shelter built around it with most anything that will trap and hold heat on those few cold nights.  Our patio is a great place to offer potted plants shelter through the winter.  It offers shelter from the wind, and also absorbs and holds a bit of heat on sunny days.

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A plant rated to Zone 9 or 10 will definitely need to come indoors in our area.  But because Aroids have a dormant period over winter, we can keep them in our low light but frost free basement.

As Colocasias and Alocasias grow more popular, enthusiasts are left deciding whether to try to save them for another season, or whether to start next season with fresh plants.   Sometimes space determines our choices, other times our budget.  That said, I’ve found four ways to keep these beautiful plants from one season to the next.

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Colocasia ‘Black Magic’ is hardy to Zone 8. We were fortunate to have one overwinter in a protected area, and this is an off-set I dug up in August to grow on. It is now safely tucked into our garage for the winter.

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I found two of our most spectacular Alocasias back in February, at Trader Joe’s.  They were right inside the door, with a few other pots of ‘tropical’ plants.  Because I recognized their leaf, I bought two, intending to use them in large pots to frame our front door all summer.  What came home in a 4″ pot, grew over summer into a huge and beautiful plant.  I learned today that their roots had completely filled the 20″ pots they have grown in since early May.

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This Alocasia, originally from Trader Joe’s, wasn’t labeled when I bought it last winter. It reminds me of A. ‘Regal Shields,’ but grows a bit larger.

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I can barely slide those pots when they are well-watered.  And, I plan to re-plant them for winter interest.  There was no question of trying to move them into our home or garage to overwinter the plants.

But last night I did my homework, and spent a while searching out how others have managed to overwinter large Alocasias.  Since the plant goes dormant, it can be kept, barely moist, out of its pot in a frost free basement or garage.    So I pried each of my beautiful Alocasias  out of their pots this morning, and lowered each, root ball intact, into a large paper grocery bag.  I’ve set the bags into shallow plastic storage boxes in our basement.  The leaves will wither; the soil will dry.  But life will remain in the plant, and I can pot it up again in spring for it to continue growing.

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How many plants? I didn’t count…. But here are four grocery bags filled with Aroids to sleep through winter in the basement.

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I decided to hedge my bets again this winter by storing our Aroids in a variety of ways.  While I’ve brought a few indoors in smaller pots to either keep growing in our living room, or slowly go dormant in our garage or basement; a great many got yanked from their pots this morning and stuffed into grocery bags.  Now the Alocasias will mingle for the next few months with A. ‘Stingray,’ C. ‘Mohito’, and C. ‘Tea Cups.’

C. ‘Tea Cups’ is supposed to be hardy in Zone 7.  Actually, we had one overwinter in a very large pot last year, but it was slow to emerge and never grew with much vigor over summer.  So again, I hedged my bets.

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A. ‘Stingray’ came home in a 4′ pot this spring. It has grown prodigiously, and there were several small off-sets. I pried these out of the wet soil, and am storing them in the grocery bags for winter.

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Remember, all of these plants create off-sets.  So, I left a few plants growing in the circular bed we began in spring.  But I pulled up enough to replant the bed next spring, if those don’t survive winter for whatever reason.  I have a few C. ‘Tea Cups’ overwintering in moist soil in pots, and others set to go dormant in paper grocery bags.

The very small divisions of Colocasia ‘Black Magic’ that I potted up in late summer came in to the living area in their pots, along with  A. ‘Sarian’ and a few A. ‘Amazonica‘.   I can give them window-sill space and keep them growing.  Even if you don’t have space to keep the largest of your Aroids, chances are good that there will be a small off-set that you can save over winter.

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For plants like Begonias and Brugmansias, which don’t create off-sets, consider taking cuttings if you need to conserve space. If you don’t have room for the whole pot or basket, cut a few vigorous branches to root in a vase or jar near a window.

Cuttings placed in water now will root, and may be potted up in early spring.  I always have Begonia cuttings rooting in vases of water, but I brought a few more cuttings in today.  We just have too many pots of Begonias to save them all.  But I am careful to save some of each variety.  Because plants like Begonias root so easily in water,  once you have a variety, you can keep it going indefinitely.

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Many, many plants will root in water.  I’ve experimented over the years with keeping many genus of plants going, because the nursery trade just isn’t that dependable when there is a particular variety you want to buy in spring.   Maybe you’ll find it, but maybe its shelf space will be given over to something newer or more fashionable, and your favored cultivar just won’t be available in your area.

My friends know that even if I had a good sized greenhouse, I’d soon fill it to the rafters like some botanical Noah’s Ark.  As it is, our living space is filled, once again, with my coterie of plants.  My partner is blessedly patient with my horticultural obsessions.

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Begonia ‘Richmondensis’ is an angel wing Begonia which performs well in a hanging basket.  A perennial in Zone 10,  you can overwinter it in its pot, or as a cutting.

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There is no shame in letting ‘annuals’ perish when winter finally blows into your garden.  But your Zone doesn’t have to limit what you can grow, and winter doesn’t have to destroy your beautiful collection of plants.

Master a few handy hacks, and you can keep your favorite warm-weather plants growing (and multiplying) indefinitely.

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A. ‘Amazonica’, also known as ‘African Mask’, grows vigorously in a large pot. I’ve kept this pot going for several years by letting it over winter in our living room..

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Woodland Gnome 2017
“Green Thumb” Tips: 
Many visitors to Forest Garden are amazing gardeners with years of experience to share.  Others are just getting started, and are looking for a few ‘tips and tricks’ to help grow the garden of their dreams.

I believe the only difference between a “Green Thumb” and a “Brown Thumb” is a little bit of know-how and a lot of passion for our plants.

If you feel inclined to share a little bit of what YOU KNOW from your years of gardening experience, please create a new post titled: “Green Thumb” Tip: (topic) and include a link back to this page.  I will update this page with a clear link back to your post in a listing by topic, so others can find your post, and will include the link in all future “Green Thumb” Tip posts.

Let’s work together to build an online resource of helpful tips for all of those who are passionate about plants, and who would like to learn more about how to grow them well.

‘Green Thumb’ Tip #1:  Pinch!

‘Green Thumb’ Tip #2:  Feed!

‘Green Thumb’ Tip #3 Deadhead!

‘Green Thumb’ Tip #4 Get the Light Right!

‘Green Thumb’ Tip #5: Keep Planting!

‘Green Thumb’ Tip #6: Size Matters!

‘Green Thumb’ Tip # 7:  Experiment!

‘Green Thumb’ Tip #8  Observe

‘Green Thumb’ Tip #9 Plan Ahead

Green Thumb Tip # 10 Understand the Rhythm

Green Thumb Tip # 11:  The Perennial Philosophy

Green Thumb Tip #12: Grow More of That! 

‘Green Thumb’ Tip:  Release Those Pot-Bound Roots! from Peggy, of Oak Trees Studios

 

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