
April 2, 2017
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It is a rare gardener who doesn’t enjoy designing container gardens. Whether filling a barrel or a basket, a simple clay pot or a beautiful glazed pot from Asia; we can try out ideas for plant combinations in a perfectly controlled environment. Whether you are simply filling the pots by your front door, or creating an object of art for the season coming, container gardens give us months of enjoyment.
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November 27, 2016 soon after planting H. ‘Snow Fever’ along with some Viola starts and Creeping Jenny Vine.
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Container gardens made in autumn, for enjoyment during winter and early spring, present special challenges and special opportunities. Finding plants which will grow and look good from December into March can be a challenge. Ice, snow, and frigid, drying wind present challenges for most plants.
But the ability to spice up a potted arrangement with spring bulbs presents a challenging opportunity for the gardener to plan in four dimensions. We can look forward in time to how the bulbs will grow into their potential, interacting with the other plants in our arrangement, months into the future.
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November 30, 2016
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Autumn planted container gardens give me particular pleasure. Planted in late October or November, once summer’s annuals have grown shabby, these arrangements will grow and enliven our comings and goings for the next six months.
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Our beautiful geranium in June, which lasted well into fall and past the first few frosts.
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It was already well into November of 2016 when I finally emptied this large white pot of its geranium. We enjoyed this particular geranium all summer for its vivid, generous flowers. After it survived the first frost or two, I moved it to a nursery pot in the garage to hold it over for spring, and re-did this pot which stands permanently on our driveway near the back door.
And I refilled the pot with a beautiful Helleborus cultivar that I spotted for the first time this fall, at a local garden center. I was intrigued by its variegated leaves, and wanted to watch it grow and bloom close up, in this pot we pass daily.
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Helleborus argutifolius ‘Snow Fever’ shows intriguing new growth by January 4, 2017. The Muscari have grown leaves through the moss mulch.
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It was quite small when we purchased it, but its few leaves promised a beautiful display coming. This cultivar is a Corsican Hellebore, Helleborus argutifolius, which is a bit more tender than the Helleborus orientalis we more commonly grow. Corsican Hellebores generally have white, or green tinged flowers. These were advertised as creamy white, outlined in rosy pink.
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By late January, we could see the beginnings of flowers and tender new leaves.
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When I re-worked this pot in November, I removed most of the Creeping Jenny vine, leaving only a little to grow on through the winter. Creeping Jenny can take a pot with its extensive root system. I planted some of the little Viola starts I had on hand to provide a little additional interest while waiting for the Hellebore to bloom.
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February 15, 2017
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I had not yet purchased any Grape Hyacinth bulbs, but knew I wanted them in this arrangement, too. It took me several weeks to finally buy the white Muscari, plant them, and finish the soil surface with moss.
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February 23, 2017, on a rainy day, the flowers have begun to bloom. Holly berries fall into the pot and need picking out from time to time.
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It was already mid-December by the time the potted arrangement was completed. The Hellebore, ‘Snow Fever,’ was beginning to show some growth. In a partially sunny spot, warmed by the drive and the nearby garage, this potted arrangement has shelter from the wind on three sides. Even so, it has weathered inches of snow, night time temperatures into single digits, ice, and wind.
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By late March, a month later, the Creeping Jenny has grown in and the Muscari have emerged. Grass, embedded in the moss, has grown in, too.
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I am very happy with how the whole arrangement has come together. I’ve not only come to love this cultivar of Hellebore, but I’ve also learned that this combination of plants looks great together. ( In retrospect, I almost wish I had planted a white Viola rather than the red. But the red certainly ‘pops!’ against the other colors!)
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April 2, 2017
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I will plan to plant more white Muscari this fall around Hellebores out in the garden. Moss makes a beautiful ground cover around Hellebores. And for all of its vigor, Creeping Jenny, Lysimachia nummularia, works well in winter container gardens.
It began growing quite early and has filled out nicely this spring, in time to compliment the flowers. Its chartreuse leaves work well with the pale Helleborus’s colors and with the Muscari. Creeping Jenny remains evergreen when planted out in the garden, and forms an attractive ground cover around perennials and shrubs.
When planning your own container gardens, especially ones to enjoy through the winter, remember that foliage is as important, or maybe even more important, than flowers.
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This H. ‘Snow Fever’ grows elsewhere in the garden, sheltered under tall shrubs. Its new leaves begin almost white, and green up as they grow.
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The foliage in your arrangement will fill your pot for many weeks longer than the more transient flowers. So try to include a plant or two with showy, interesting leaves. Besides Hellebores; Arum italicum, Ajuga, Lysimachia, Heuchera and evergreen ferns do well in our climate.
It is only early April. This container garden will continue to grow and change until I reclaim the pot for another geranium. When I do, everything growing here now will be planted out into the garden. All are perennials, save the Viola, and will grow for years to come.
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When constructing your own container gardens, follow a few simple tips to get the most from the plants you choose:
- Choose a large enough container for all of the roots to grow. Bulbs produce large root systems. If you plant a lot of bulbs, the pot will get very congested unless you begin with a large pot.
- Choose plants with similar needs for light, moisture and soil PH. Plan for your plants to grow to different heights for an efficient use of space. Soften the pot’s edges with a vine or other plant which will spill over the side. Plan for a succession of interest falling on different plants as the season progresses.
- Don’t overstuff the pot. Magazines and books on container gardens often feature mature plants packed in tightly. If the pot looks ‘finished’ from day one, your plants aren’t left with much room to grow. The strong will crowd out the weak, and none will grow to their full potential. Leave room for growth in your designs.
- Begin with a good quality potting mix, and stir in additional fertilizer at planting time. I often re-use at least some of the potting mix from the previous season. But I stir in Espoma Plant Tone before adding new plants, finish with fresh potting soil, and generally top dress the finished container with a slow release product like Osmocote.
- Mulch the top of your finished planting with gravel, moss, or some other mulch. It keeps the foliage cleaner in heavy rains and helps conserve moisture.
- Boost the plants from time to time with an organic liquid feed from a product like Neptune’s Harvest. Fish and seaweed based products add important trace minerals and help the soil remain biologically active.
- Groom plants regularly to remove spent flowers, brown leaves, and any trash which has blown or fallen into the pot from other nearby plants. Pull small weeds or grass as they sprout from a moss mulch. If a plant is struggling or dying, don’t hesitate to pull it out.
- Place your pots where you will see them daily. Enjoy their ever changing beauty as they brighten your days.
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Woodland Gnome 2017
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