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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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Water worries for houseplants

Question: I use tap water to water all my houseplants, but I’ve heard that’s not always a good idea. What difference does it make?

peace-lily-2Most people don’t think about the water they use to water houseplants —  just turn on the tap and fill the watering can. But what’s in your tap water may make a difference in how your plants grow.

Garden author Barbara Pleasant talks about water problems in her book, The Complete Houseplant Survival Manual. She says most plants prefer “soft” water, which contains low amounts of calcium and magnesium salts, over “hard” water, which contains high amounts of these elements. Water softeners remove the mineral salts through filtration or magnetization, but the water still contains high levels of salt, she says. This could lead to problems when it is used to water plants.

Pleasant suggests using rainwater or bottled distilled water, which are naturally soft, on your indoor plants.

The mineral salts in tap water are only one thing to consider. Plants may also be sensitive to too much chlorine, which is added to tap water to prevent bacteria, and some plants, including palms and dracaenas, are sensitive to fluoride.

To solve the problem of too much chlorine, allow the water to sit out overnight, so that chlorine and other chemicals escape into the air. If you suspect fluoride may be causing a problem (browning leaf tips on plants may be a clue), it may help to add a pinch of lime on the surface of the pot every few months, Pleasant advises. “This helps raise the pH of the soil, which makes the fluoride more soluble in water.

One other watering tip: whatever the source of the water, make sure it’s at room temperature when you water your plants. Drenching a houseplant in icy water chills the roots, which can cause them to rot, Pleasant says.

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One Response

  1. I wholly endorse the idea of dechlorinating water by letting it sit at least overnight. I used to have issues with my fern dropping leaves after a month indoors (I’d take it down to the garage and leave it till spring), but now that I’ve adopted the practice of letting water sit out, my fern stays lovely all winter and then is ready to divide when spring comes (so I put half in the garden and half in a pot on my porch).

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