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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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‘Cactus’ blooms for the holidays

My Christmas cactus always blooms early, sometimes before Thanksgiving. Is this normal? How can I keep it blooming longer?

holiday-cactus-thanksgivingIt’s possible the plant you call Christmas cactus is actually a Thanksgiving cactus – yes, there are two slightly different varieties. Look at the stem segments: if the margins have two to four sharp serrations along each edge, the plant is Schlumbergera truncata, the botanical name for Thanksgiving cactus, which blooms slightly earlier. If the segments are more rounded, the plant is S. bridgesii, Christmas cactus. That’s the one more likely to bloom in December or later.

Both are photoperiodic plants – they respond to the change in proportions of light and dark, and begin to form buds as days shorten and nights begin to get longer. They also thrive in the same conditions: bright light and a moderate amount of water, and a dose of balanced fertilizer every now and then. (In her book The Complete Houseplant Survival Manual, houseplant expert Barbara Pleasant suggests once-a-month feeding in winter.)

Christmas and Thanksgiving cacti are generally easy-care plants. They benefit from being outdoors during the summer, but bring them inside when nighttime temperatures drop to 40 to 50 degrees. Place them out of bright sunlight, then when buds begin to form, bring the plant into the bright light.

One other thing to know: when the plant is full of buds, it sometimes seems to resent being moved, so once it’s placed in a good spot for winter, try to avoid moving it. “Once plants begin blooming, they may drop their blossoms if exposed to any kind of stress,” Barbara Pleasant writes. A stable environment should keep those blooms going longer.

They are easy to share. Schlumbergera propagates easily from stem cuttings, and a plant can live for several years, even a decade or two.

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