Gardening under Glass
This year I planted a winter garden. I’m growing most of my vegetables in cold frames.
When the water outside is frozen and the grass and rooftops glisten with frost, it’s a thrill to see lush green vegetables growing under glass in my garden.
Vegetables like spinach, broccoli, French breakfast radishes, bok choy, and sugar snap peas are thriving where they’ve been planted in good soil under a cold frame.
Cold frames are easy to construct. Basically, they are transparent covers over a prepared bed of soil. Mine are made of old, salvaged windows that crank open and are mounted atop some of our four-by-six-foot raised beds. Cold frames protect against rain, wind, ice, and snow. The frames can even protect somewhat against infestation by common pests.
It’s important to provide ventilation by opening the cold frame on warm days. Under glass, the heat intensifies and could burn your tender plants. When night-time temps plunge, keep the cold frame closed. You can pile further insulation against the frames using bales of straw or hay or bags of raked leaves.
Inside these protected glass spaces this time of year (in deep December), a variety of cool-season crops can be cultivated. Consider planting seedlings of green leafy plants like kale, mustard greens, cabbages, turnips, radishes, carrots, beets, lettuces, broccoli, and onions.
Our farmette is located in Zone 15. We live in a sheltered valley inland from the San Francisco Bay and east of the Berkeley hills. We get really hot summers with temperatures that climb into triple digits. In winter, we get frost and freezes and more rarely a dusting of snow.
Long after other gardeners in our area have put away their trowels and shovels, I’m still at it. Gardening puts food on the table. When we are quarantining ourselves from others, we can focus on our passion for gardening and grow cool-season crops in late fall, early spring, and, yes, even in winter with the help of a cold frame or two.
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Tis the time for Cool Season Planting
If you love the cool season plants like lettuce, spinach, kale, onions, leeks, sugar snap peas, and artichokes, Valentine’s Day weekend is the time to start planting cool season crops in the Bay Area and other warmer climates.
I put in onions throughout the cool season and am rewarded with burlap bags of red onions, yellow, white, and the walla walla variety for kitchen soups and other culinary creations during the first months of the year.
My husband is building more growing boxes (4 x 4 x 3) in which we shovel amended soil, some planting mix, bone meal, blood meal, compost, and chicken manure. The soil will grow almost anything.
This weekend, we’re moving a couple of citrus trees and three rose bushes. I’ll feed and water and watch for the new shoots to show within a week or two if the weather stays warm. So, you see, Valentine’s Day isn’t just for lovers but also people who love to garden.