In a special feature in Toronto’s Globe and Mail newspaper on Monday, author and gardening expert Eliot Coleman gave these helpful tips for growing vegetables throughout the year.
How to grow vegetables year-round
by Hadley Dyer
Do you dread surrendering your vegetable plot to Old Man Winter? You don’t have to, says Eliot Coleman, author of Four Season Harvest  and The Winter Harvest Handbook . Be the four-season gardener. Here are his tips.
For cold-hardy crops, fashion a tunnel-style greenhouse out of electrical conduit covered with plastic sheeting. Seed catalogues sell “hoop benders,” which form the conduit into a horseshoe shape that you then attach to a four-sided wooden frame. “If you and your neighbours go in on the tool together, you can make a mini-greenhouse for almost no money at all,” says Mr. Coleman, who tends an experimental market garden at Four Season Farm in Harborside, Me., with his wife, author and Washington Post columnist Barbara Damrosch.
Change the climate
Winter crops will thrive inside an old-fashioned cold frame – a bottomless box with a glass top that you can build (old windows work well) or purchase readymade. “Basically, you’ve changed the climate,” Mr. Coleman explains. “You’ve moved your garden 500 miles [800 kilometres], or one and a half growing zones, south. This lets you harvest up to Christmas with the very hardiest greens.” He suggests starting with spinach and Asian vegetables such as bok choy.
As temperatures drop, or if your region is already pretty chilly, you can add a greenhouse around your cold frame. “With a cold frame you’re providing a sweater for your plants. The greenhouse is like a windbreaker over the sweater,” Mr. Coleman says. “That second layer moves you an additional 500 miles south.”
Sow now, reap later
Unless you live in a relatively balmy climate such as Vancouver’s, winter crops should be sown by mid-October. But you can kick off an early-spring harvest by planting inside a cold frame in late fall. “Put some seeds in, no matter what,” Mr. Coleman advises. “Even if you get nothing to eat until spring, you’ll learn a lot. Gardening is a learning game.”
Read the full feature on The Globe and Mail. 
Eliot Coleman is the author of The Winter Harvest Handbook , Four-Season Harvest , and The New Organic Grower , and is featured in the new DVD, Year-Round Vegetable Production with Eliot Coleman .