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It's time to take coleus cuttings

Want plenty of coleus plants next spring? It's easy to take cuttings and root them now.

'Fishnet Stockings' is a newer upright cultivar of coleus that's lime and purple. It has good heat resistance. Not only is it a beauty, it has won 'top performer' awards from several arboretums.

Courtesy of Karan Davis Cutler

October 29, 2010

In Vermont, we鈥檝e already had three light frosts, which means I should have taken coleus cuttings three weeks ago. The goal with coleus is healthy leaves, the plant鈥檚 reason for being. Most gardeners remove any flower spikes that appear.

What spectacular leaves they are, and new cultivars with brighter and bolder and more colorful foliage appear every year. Names such as 鈥楤urgundy Giant鈥, 鈥楰iller Gold鈥, 鈥楥herry Ribbon鈥, 鈥楤lack Lace鈥, 鈥楲ime Frill鈥, and 鈥楩rizzy Yellow鈥 give you an idea of what the coleus fanciers are up to.

Botanically, coleus has been reclassified from Coleus to Solenostemon scutellanoides, a name I can neither pronounce nor remember. It鈥檚 also known as painted nettle. 鈥淧ainted鈥 for the vibrant, patterned leaves, 鈥渘ettle鈥 because 鈥渞epeated and frequent contact鈥 with the plant has been said to cause .

Don鈥檛 be alarmed, though: I鈥檝e never met anyone who even used gloves to handle the plants.

A fashionable plant that's simple to grow

A garden favorite of the Victorians, coleus almost disappeared from trendy gardens for decades but recently has been rediscovered and now routinely appears in tr猫s chic planters on the terraces of people who pay someone else to do their gardening. Tr猫s simple.

In fact, both and propagating coleus are tr猫s simple. Coleus need well-drained soil that is rich in organic matter, modest feeding, because too much fertilizer lessens leaf color, and even soil moisture. Last, pinch out the terminal bud of main shoots to encourage side branching and more leaves.

Contrary to popular belief, coleus are not just for shade. Most can be planted in a sunny locations but will require more water. Strong light also darkens leaf color, so be warned that a red variety grown in the shade may be burgundy in the sun.

What coleus won鈥檛 tolerate is cold.

An easy way to transplant coleus cuttings

Which is why I need to get hopping and make cuttings 鈥 two- or three-inch shoots 鈥 for next year. (.)

You can root the cuttings in a soil mix, but I stick my cuttings in glasses of water and place them near a window. Once the roots are well developed, I transplant the each shoot to a three-inch pot, pinch it back, and set it under artificial lights.

A confession: Some years, I never get around to transplanting them, and in spring just move the cuttings from their glasses of water to outdoor containers. Not the recommended method, but it works.

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Karan Davis Cutler blogs regularly at Diggin鈥 It. She's a former magazine editor and newspaper columnist and the author of scores of garden articles and more than a dozen books, including 鈥淏urpee - The Complete Flower Gardener鈥 and She now struggles to garden in the unyieldingly dense clay of Addison County, Vt., on the shore of Lake Champlain, where she is working on a book about gardening to attract birds and other wildlife. To read more by Karan, click here.