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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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Too late to trim

Our Knockout roses and other shrubs really need one more trim before winter sets in. Is it safe to trim this late in the year?

Knock Out rose

Photo from Star Roses and Plants

The best time for shrub-trimming depends on what you have, but now that we’re rushing headlong into winter, it may be best to wait a few more weeks — until late winter or early spring — to take the shears to anything. If you have spring-flowering shrubs, especially, wait until after they finish flowering, to avoid cutting off the buds.

Rose experts generally say that the Knock Out rose varieties don’t need to be trimmed every year. Some garden specialists recommend removing about a third of the old branches every two or three years to encourage new growth. They can also be cut back to reduce the size of the plant. Whatever pruning or shaping you need to do, late winter is a good time for the task.

(Photo of the Knock Out® rose Rosa‘Radrazz’ is from Star Roses and Plants)

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