Be honest. What kind of gardener comes to mind when you hear the word “greenhouse”?
Probably not guys like Ed Egolf, a truck driver who lives in rural Pennsylvania. But his zest for growing tomatoes and peppers from seed indoors rivals any you’ll find in elite horticulture circles.
“When you’re in the greenhouse working on something, focusing on that, nothing else really matters,” he says.
Though a popular fantasy, owning a greenhouse isn’t for everyone. It’s a responsibility and an expense, like a pet or a child.
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But it’s easier than ever to find — and afford — a hobby greenhouse. They’re sold as kits that you assemble yourself, with aluminum frames and polycarbonate plastic panels, for as little as $400 for a 4-by-6-foot model.
Bigger, sturdier, ever more luxurious versions — and custom jobs — can cost thousands, tens of thousands, and more.
“As with anything else, they can be as expensive as you want them to be,” says Egolf, who built a 14-by-20-foot custom greenhouse adjoining his master bedroom 18 years ago. The materials cost $8,000.
In 2012, an estimated 1.7 million households purchased greenhouses, compared with 800,000 in 2000, according to the National Gardening Association.
Sounds like a big jump. But Bruce Butterfield, the association’s market research director, offers perspective: That still represents only about 1 to 2 percent of gardening households.
“Of course, there are greenhouses, and there are greenhouses,” he adds, warning consumers away from “rickety” models that have flooded the market in the last few years. They’re made of cheap materials and often have no foundation.
“It’s like heating the outdoors,” says Butterfield, who recommends kits that offer “some fairly rugged barrier that separates frozen ground from nonfrozen ground.”
Egolf’s greenhouse has a fully insulated foundation below the frost line and an insulated shingle roof. He heats the inside with propane, which costs about $180 per winter.
Egolf, who advises newbies to start with a kit and to seek advice from the Hobby Greenhouse Association (hobbygreenhouse.org), has been known to start 400 tomato plants a year from seed in his greenhouse. His wife, MaryAnn, starts about 300 violas, pansies and day lilies.
“The greenhouse is about three-quarters full right now, and I haven’t even started my seeds yet,” says Egolf, whose tomatoes make a sea’s worth of soup, paste, salsa, ketchup and sauce.
Lynn Cook and Troy Ray are both romantic and practical.
Their custom-built greenhouse is large — 28 feet by 50 feet — and situated just across the driveway from their fully restored, 18th-century home.
Their first greenhouse, a $1,700 kit, was 8 feet by 6 feet and a great learning experience. Their current greenhouse, built in 2007, has a concrete floor with center drain, four circulation fans, and a control system that manages air vents and a shade curtain. It’s heated with natural gas and uses well water.
Cook and Ray declined to share the cost of their grand greenhouse. Cook says only that it is a priority for them: “We are totally obsessed.”
Cook, a retired nurse-educator, and Roy, a telecommunications consultant, spend more than 1,000 hours a year working in their greenhouse just on plants that they’ll enter in Philadelphia Flower Show competitions. (Last year, that was 309.) Basic maintenance takes a few hours a day.
“By the time these babies get into the flower show, they’ve had maybe 4,000 hours of work,” Ray says, as he shows off those “babies” — rare orchids, ferns, dwarf conifers, succulents and cactuses.
The hours of work have paid off with flower show and plant society awards. Walls in the house are covered with citations, and loose-leaf binders are jammed with ribbons and rosettes.
“You have to love it,” Ray says.
Butterfield, of the National Gardening Association, agrees — with a caveat.
“While you may be a fairly skilled gardener out of doors, you’ve got to become an elite gardener to grow in a greenhouse,” he says, citing “Mother Nature’s unwillingness to cut you a break.”
“You’ve got to control the temperature, the moisture, soil, ventilation, hours of light and sometimes, pollination,” he says. “I think it’s tricky.”