Houseplant Hacks: Schlumbergera Propagation

Shlumbergera blooming  in our living room in February 2015.

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Christmas or Thanksgiving cactus plants may become another family heirloom.  Long lived and easy to care for, this is a quintessential ‘pass along plant’  you may be gifted with during the holidays.

Whether someone gives you one in full bloom in a little foil wrapped pot, or a well-meaning aunt insists on sending a cutting home with you, this is the season when many families enjoy a blooming cactus as a part of their holiday.

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A neighbor gave us this beautiful Christmas cactus covered in buds, last week.

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I can’t remember a time when my own mother didn’t have a Christmas cactus.  Her first one began as a gifted cutting from someone in the extended family.  At one time it had grown to a monstrous size, maybe 20″ or more around in a  large clay pot.  I never gave this ugly duckling house plant much consideration in those years, probably because hers didn’t often bloom.

Once you’ve enjoyed the vivid, decidedly odd blooms of a Schlumbergera on a wintery day, you may develop an appetite for these unusual plants just as I have.  Their extravagant flowers are meant to attract hummingbirds to pollinate them.  I love to have one in full bloom indoors when its snowing outside.

The ‘off’ bloom schedule of these beautiful tropical cacti may have something to do with their country and hemisphere of origin.  They were originally collected from the mountainous coastal forests of southeastern Brazil, where they grow in bright, humid shade.  They may be found growing high up in trees on moss covered branches, or in small pockets of soil in rocky areas at high altitudes.

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They were in cultivation in Europe by the early 19th Century, where breeders developed new cultivars for the market.  They were enjoyed both in homes and in fashionable heated greenhouses.

Although a cactus, these plants have no spines to stick you.   A succulent, they don’t require a great deal of care.  They offer a bulky green presence year round, bursting into abundant vivid bloom  between late October and late February each year.

Schlumbergera commonly turn up in grocery stores and garden centers blooming in shades of red, pink and purple.  Sometimes you may find one with white blooms touched with vivid rose.  More rarely, they can be found blooming  in shades of salmon, yellow or orange.

This is one reason it pays to know how to root a Christmas cactus.  Once you find one of the rarer colors, you might want to produce more to share, or for your own collection.

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Light pink Christmas cactus with a tiny white poinsettia on offer at a local garden center.

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Another reason is that the stems, which look like flat leaves, can sometimes be a bit fragile.  A section may break off while you are moving the plant or while you are moving around the plant.  When this happens, it feels nicer to root the broken piece than to discard it.

I’ve tried many different ways to root these odd green stems over the years.  The stems don’t really like to sit in water, though I’ve seen my mother root them this way.  They also don’t root reliably when simply stuck into some potting soil, though this sometimes works OK.  If the stars don’t align, or the temperature and humidity aren’t just right, then your efforts may be rewarded with a shriveled or mushy bit of stem with no roots to sustain it.

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I experimented with a new technique for rooting a Christmas cactus stem in extremely shallow water, on moist rocks.

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I was understandably excited when I saw a pin on Pinterest a few months ago, offering a novel way to root Schlumbergera.  The key to the wet rock method is to understand that Schlumbergera  naturally grow in a humid, coastal forest, high up in the mountains.  High humidity is the key, along with keeping the stem mostly dry, with only the growing tip in water.

Begin with a glass or small jar, and add a few inches of clean, attractive rocks.  Fill your glass with just enough fresh, cool water, to barely cover most of the rocks.  Then add your cuttings so that they rest on the rocks in very shallow water.  It works best to ‘twist’ the cutting from the parent plant rather than using scissors to remove it.

You will need at least 1 full stem section, though you may take a cutting a few inches long, like this one.  If the cutting already has flower buds, they will continue to grow as your cutting roots.

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Place your container and cuttings into a bright, cool window sill, where the cuttings will get bright light, but minimal direct sunlight.  Keep the water replenished every few days, and watch for those roots to grow.

Once the roots are at least 1/4″ long, you can pot up your rooted cutting in a peat based soil mix with a little grit.  The soil needs to drain easily.  Keep the soil just moist, but never really wet and never bone dry.

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This cutting is ready to pot up in good quality peat based potting mix.  Add a little fine grit to improve drainage.  If you plant into a container without drainage holes, be sure to begin with a few inches of gravel in the bottom of the container for drainage.

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I  feed my Christmas cactus monthly, during their season of bloom, with diluted orchid fertilizer; which keeps the buds coming.  Mine live near a large window where they get bright light during the daytime, but they also get natural darkness in late afternoon.  They like long nights and shorter days during their season of bloom.  The long nights help trigger bud formation. Shlumbergera also use more water when they are blooming, and of course thrive in a humid environment.

If your home has very dry air in winter, then try grouping them together, and consider setting the pots on trays of pebbles with a bit of standing water in the tray.

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This cutting rooted in the glass on moist rocks. After a few weeks, I planted it in its own little container to grow on until spring.

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In our climate, Christmas cactus thrive in bright shade on the deck all summer long.  I move them out in late April, once danger of frost has passed.  They love our humidity and grow lush with very little attention until time to bring them in ahead of the first fall frosts in late October.  By then, they have covered themselves in flower buds.

Keep your plants large and lush by adding rooted cuttings to your established pots of Christmas cactus.  They like a tight fit for their roots in the pot, but do pot them up every few years and give them some fresh, fertile soil.

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If your space allows, plant Christmas cactus in hanging planters, or set the pots up on plant stands where their drooping branches and long, pendulous flowers may be admired.   I’ve even seen a grouping of Christmas cactus pots arranged on a plant stand with layers of shelves, to give the illusion of a blooming Christmas tree.

These odd houseplants are extremely easy and rewarding to grow, once you know a few hacks to make your efforts more successful.

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Woodland Gnome 2017
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The Root of the Matter

June 2, 2015 pots 001

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Early summer is the season when our new plant acquisitions sink their roots into the garden.

This tiny cutting from an ornamental sweet potato vine grew roots as it sat in a little vase of water by my kitchen sink.  Did you notice how the roots are curled into a spiral?

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June 2, 2015 pots 002

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You may notice that roots grow in a circular pattern around the inside of a nursery pot, as well.  When we knock a new plant out of its pot, we gently loosen these roots, growing round the outer edge of its root ball, to encourage them to grow out into the surrounding soil.   The plant grows more vigorously when its root system expands.

This tiny cutting grew these roots in a little less than two weeks.  Once started, sweet potato, Ipomoea batatas, grows vigorously.  A tender perennial, the vine will grow until frost kills it back.

I enjoy ornamental sweet potato vines in summer pots, but have not grown any for the last several summers.  They are very attractive to deer, and so must be kept out of their reach.  They are also such vigorous growers that they can overwhelm other plants in a mixed planting.  They are gluttonous for food and drink, and give their best color when grown in full sun.

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June 2, 2015 pots 003

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I’ve purchased two sweet potato vines of different cultivars this spring, however, and am taking cuttings to add to hanging baskets and planters on our deck.  These vines create a lush, tropical look wherever they are used.

Many plants will root quickly in water during spring and early summer.  This allows us to buy one established plant, and then quickly produce many clones of it.  These new plants grow to a useable size more quickly from cuttings than from seed.

As soon as they grow a few inches of roots they can be potted up or planted in the garden.  A large number of plants of a single cultivar can be had in a matter of weeks for mass plantings, at minimal expense.

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These Coleus cuttings are rooting in their vase.  They will be ready to plant out by early next week.

These Coleus cuttings are rooting in their vase. They will be ready to plant out by early next week.

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One of my beloved blogging sisters, Eliza,  sent me a package of scented Pelargonium cuttings this past week, and they are all happily gathered around my kitchen sink tonight engaged in the business of growing their roots.  Half are in a jar of water, and the other half in a pot of damp sand.

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Pelargonium cuttings, a gift from a blogging sister, rooting in my favorite rooting jar.

Pelargonium cuttings  rooting in my favorite rooting jar.

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She prefers the damp sand method, and I am following her instructions to the letter.  I am curious to see which method will prove more effective for rooting cuttings.   Which cuttings will root soonest, and with the fewest cuttings lost to decay?

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This is Eliza's preferred method for rooting cuttings.  in clean, damp sand.  I've kept these covered with a produce bag to increase the humidity around their leaves.  The bamboo skewer holds the bag off of their leaves.

This is Eliza’s preferred method for rooting cuttings. in clean, damp sand. I’ve kept these covered with a produce bag to increase the humidity around their leaves. The bamboo skewer holds the bag off of their leaves.

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A marvelous and generous gift, I am enjoying the fragrance of these beautiful cuttings, and can’t wait to watch them grow in our garden this summer.

If you’ve not tried creating your own new plants in this way, this is a good time of the season to give it a try.

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September 4, 2014 Coleus 002~

It is an interesting way to generate a lot of free plants.  As you can see in the photos, roots will begin to grow both from the cut edge of a stem, and also from the nodes where leaves meet stem.

Most gardeners will tell you to remove all leave which would be underwater.  That is good advice, and I don’t often follow it.  The idea is that if those leaves rot, the water is contaminated and you might lose the whole cutting.  As you can see here, the leaves are still just fine, and I have a well-rooted cutting to plant in this mixed pot.

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A newly planted pot on my deck holds Rosemary, Coleus,  Carzytunia Sparky' Petunia,  Strawberry and Cream Lanai Verbena, and a voluneer seedling of ornamental pepper moved over from another pot.

A newly planted pot on my deck holds Rosemary; Coleus;
‘Carzytunia Sparky’ Petunia; Strawberry and Cream Lanai Verbena; the newly rooted sweet potato cutting; and a volunteer seedling of ornamental pepper moved over from another pot.

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We’ve had a lot of rain today, so it has proven a good day to pot up cuttings.  I am looking forward to seeing this pot fill in with lots of lush color and interesting form this summer.

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Woodland Gnome 2015

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June 2, 2015 pots 011

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