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  • Upcoming Garden Events

    Sept. 30: The Nashville Herb Society presents Through the Garden Gate: A Glimpse of Edwardian England, 8 a.m. – 3 p.m. at Cheekwood Botanic Hall. Celebrate the gardens, foods and flowers that delighted Downton Abby family and friends at the turn of the 20th century. The event begins with a hearty Edwardian breakfast, followed by three speakers: Marta McDowell on Beatrix Potter’s Gardening Life; Geraldine A. Laufer on Tussie Mussie – Victorian art of expressing yourself in the language of flowers; and Terry White, The English Garden event florist . Registration includes breakfast, box lunch in the garden with music, English tea and cookies. To learn more or to register, visit www.herbsocietynashvlle.org.

    Tips & tasks – September

    Cut the dead tops of coneflowers, but leave enough for goldfinches to enjoy the seeds.

    Plant cool-weather vegetables for a fall crop: spinach, mustard and turnip greens, radishes, leaf lettuce.

    Start a new lawn of cool-season grass, such as fescue, or refurbish or repair establish lawns.

    Don’t let the soil of newly planted grass dry out. New grass needs about an inch of water per week.

    It’s still warm, so continue to water and weed garden beds as needed.

    Remove dead foliage, spent flowers and other garden debris; replenish mulch as needed.

    Continue to harvest produce, which may be getting a boost now from slightly cooler weather. Keep watering sage, rosemary and other perennial herbs so they’ll be in good shape to get through winter.

    Prepare to bring houseplants back indoors: remove dead leaves, scrub soil from the sides of the pots, treat for insects. Bring tropical plants in before nighttime temperatures dip to 55 degrees.

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Moving calla lilies

Question: We live near Crossville, Tenn. and will be moving soon. What is the earliest I can dig up my callas? They have survived well the past three winters without being dug up but they probably need to be separated anyway.

calla-lilyAssuming that your callas are the type that die to the ground each winter and reappear the following spring, the rhizomes can be dug up anytime in the fall and stored for winter.

Callas are native to South Africa, so there is always the chance that the tubers may not survive extremely cold winter in the ground. But most gardeners I talk to in Middle Tennessee (Zone 7a, home of The Garden Bench) say they never dig up the rhizomes, and they come back each year. In Zone 6b (The USDA Hardiness Zone for Crossville), their survival seems a little less certain, but if yours have continued to grow and spread, then they must be in a friendly environment.

Here’s the recommendation for winter storage from the Gardening Know How website: To dig the rhizomes for storage, lift the clump out of the soil and allow them dry for two or three days, brush off the remaining soil and store them in peat moss in a paper bag in a cool, dry location.

Replant them in their new home next spring, after the danger of frost. Callas appreciate slightly acid soil that drains well, and should be watered regularly while they are growing and in bloom. They grow in full sun or partial shade.

The graceful flower bracts of calla lilies, which open about mid-spring or early summer, are lovely and delicate, but don’t be fooled by this. Callas are sturdy plants, and I have seen them escape their bed and push up through the packed gravel of nearby garden paths.

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