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Garden View: Dapper Dahlia, the Extra Man at the Garden Party

Rural Intelligence Style Liza Gyllenhaal is the author of the novels “Local Knowledge,” “So Near,” and the forthcoming “A Place for Us,” all set in the Rural Intelligence region. She and her husband divide their time between Manhattan and West Stockbridge, MA where she writes — and putters around in her garden. We’re pleased to share her periodic musings on gardening and other topics with RI readers.

Many years ago, my husband and I had a friend who often acted as a “walker” for wealthy older women in Manhattan. Divorced, his children married, and nearing retirement, he was one of those natty, fit gentlemen of a certain age who loved slipping into his tux and cummerbund— a forerunner to what we now call a “metromale.” He’d tell us about the parties and gala benefits he’d attend, squiring his various “girlfriends” around town, fitting in no matter where he went. The perfect companion. 

Rural Intelligence StyleThat, to my mind, is exactly the purpose a dahlia serves in the garden. This is the time of the year when your usual guest list of perennials begins to thin. The monarda have wilted. The shasta daisies are past their peak. The Japanese anemone and turtleheads won’t be making an appearance for another week or so. Unsightly vacancies suddenly form in the long border’s seating plan. You can always make do with annuals — geraniums or snapdragons, say — but isn’t there something a little too loud and obvious about them? 

Dahlias, on the other hand, have the look and feel of a first-class perennial (though they are essentially tubers) combined with the flexibility of a bulb. Could your tired old peony bush use a fresh new face at its side? Hello, darling, let me introduce you to my dear friend Mr. Dahlia.

I think dahlias have an unfair rep for being difficult to grow and maintain. But once you get the hang of their little quirks and habits you’ll find that their remarkable variety and vigor, including blooms that last right up to the first hard frost, make up for any of these idiosyncrasies. Originally from Mexico, dahlias are subtropical – which means that, in our area, they need to be lifted at the end of the season and stored in a bed of peat moss in a cool, dry, frost-free spot. And they’re fast growers, so they should be staked when they’re planted to support their prodigious size (mine often shoot up past four feet!) and munificent blooms. You might read about their need for extra compost, watering, pruning , etc., but once I plant my tubers in early May, they’re on their own. And my dahlias seem to thrive under this regime of benign neglect.

Rural Intelligence Style

Dahlias in the cutting garden of Chateau de Chenonceau in the Loire Valley, France.

And there’s a lot more good news! Though I’ve become particularly fond of the decorative double-flowered dahlia in shades of pink and purple (pictured above), there are hundreds of dahlia types, tints, and colorings — from miniature pompons to enormous dinner-plate varieties whose flowers can grow up to 14 inches in diameter. Though some have been developed specifically for cut flowers, I find that most dahlias lend themselves beautifully to bouquets, keeping their shape and color long after the cosmos and zinnias have wilted.

Try introducing a dahlia or two into your garden next spring and you’ll discover a delightful (and lucrative) bonus at the end of the season when you lift them for storage: the plant will have produced a half dozen or more new tubers just like the one you started with. Suddenly, you’ll have lots of extra “extra men” to help perk up your late summer garden next year!

Tips for gardening with dahlias:

•  They’re sun-worshippers. Though they’ve done well for me in spots with afternoon shade, for maximum blooming they need lots of sunshine.

•  Recycle your holes.  My tulips are usually withering about the time that dahlias should go in (early May for me), so I lift the spent tulip bulbs and replant some of the holes with dahlia tubers (and vice versa in the fall).

•  Give them plenty of elbow room.  For the taller varieties, you’ll need two to three feet between them — they grow and spread out far more than you can imagine when you’re planting them as six-inch tubers.

•  They like being pinched. Promote side growth and more flowers by pinching out the center shoot when the plant is well established.

•  They’re easily hurt.  When you’re cutting them for flower arrangements, make sure not to bruise the stems. Cut them with a sharp knife rather than scissors and at a 45-degree angle for maximum water intake. 

•  Consult the expertsThe American Dahlia Society has a wonderful web site that tells you everything you need to know about the “growing, showing, and enjoyment of dahlias in North America.”

Of note in August:

Margaret Roach, garden writer and editor extraordinaire, welcomes you into her stunning garden during Columbia County’s Open Days on August 18th.

“The garden, nearing 25 years of age, reflects my obsession with plants,” Ms. Roach writes, “particularly those with good foliage or of interest to wildlife, and also my belief that even in Zone 5B, the garden can be compelling and satisfying all 365 days. Informal mixed borders, shrubberies, frog-filled water gardens and container groupings cover the steep two-and-one-third-acre hillside, a former orchard with a simple Victorian-era farmhouse and little outbuildings set in Taconic State Park lands on a rural farm road.” 

This is sure to be one of the gardening highlights of the summer!

Don’t miss Contained Exuberance!
Rural Intelligence Style

Picture perfect pots meet botanical creativity and expertise in this new exhibit that just opened at the Berkshire Botanical Garden

Bringing together some of the region’s most talented designers — David Burdick, Heather Grimes, Tamsin Goggin, Jeanne Weller, Philippe Soule, Bob Hyland, Sarah Price, and Madaline Sparks — Contained Exuberance offers a unique and intriguing display of container gardens. Expect the unexpected as you walk through the 15-acre Garden and come upon designs ranging from traditional to whimsical, and incorporating succulents, grasses, and a dazzling range of annuals. The exhibit will remain on view through September. — Liza Gyllenhaal

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Posted by Bess Hochstein on 08/06/12 at 03:20 AM • Permalink