Plant a Cold Climate Fall Vegetable Garden

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Sep 07, 2009 | Chaya Kurtz

Fall Vegetable Gardening

You can grow vegetables in the fall in cold climates like New England. Read on for tips.

Germinate Seedlings Now

It's too late to direct seed your fall garden crops in colder climates, but you can still successfully transplant starter vegetables in September. Kale, greens, garlic, carrots, and beets can grow in cold weather, so there is still time to plant them and allow them to mature before the first hard frost. Start your seedlings indoors or in cold frames, and mulch them heavily with compost and a ground cover such as dry leaves or straw for a winter harvest.

Prepare the Bed for Fall Plants

Prevent plant decay and disease by removing the leftover plants from summer's harvest. You can put them into your compost pile, or cut them into small pieces and till them into the ground. The small pieces of plants will help to add nitrogen to the soil. Turn over the soil with a pitchfork and add compost or compost tea.

Build Cold Frames

Extend your growing season by planting your fall vegetable garden in cold frames. Cold frames are mini-greenhouses. You can leave them open on hot days, and keep them closed on colder days. The cold frames pictured here are made from wood and glass, but you can build much cheaper and quicker cold frames: Form outer walls with bales of straw, and cover the top of the straw bale walls with Reemay garden blanket. Secure the Reemay with heavy rocks.

Cover Your Plants with Row Cover

Your plants need to reach maturity before the first hard frost, so you need to keep them warm. Keep your transplanted seedlings covered with Reemay day and night, except if the temperature exceeds 75 degrees, because the temperature under the row cover will be 3 to 7 degrees warmer. Floating row cover holds in the ground's heat at night, and keeps pests and bugs out by day, while allowing the sun's light to nourish the pants. It will help you to conserve water by preventing evaporation.

Check Frost Dates

Your plants need to mature before the first hard frost, so check frost dates for your area. The Farmer's Almanac lists dates of the first light freeze in every US state. Heavily mulching your plants and covering them with floating row cover will help them to survive light and moderate freezes. A light freeze is 29 to 32 degrees Fahrenheit, and a moderate freeze is 25 to 28 degrees. Light freezes will kill delicate plants, and moderate freezes will kill fruit blossoms. Hardy plants like carrots, kale, garlic, and beets can grow in cold soil if they are properly mulched and covered.

Plant Hardy Greens

Greens like kale, collard greens, spinach, and mustard greens can grow until January if they are mulched well and covered. These greens are flavorful, and packed with nutrients like calcium, Vitamin C, and chlorophyll. Curly kale stands up to cold better than Lacinto kale. You can plant ornamental kale in your flower garden for cold-weather color. Its purple hue is a gorgeous contrast against white snow.

Plant Carrots

Carrots get sweeter after the first frost. Mulch the bed with six to eight inches of straw, and harvest the carrots when their roots are fully colored. Carrot seeds won't germinate in the cold, so be sure to start them somewhere warm and then transplant the little roots into your raised bed or cold frame.

Plant Garlic Bulbs in the Fall

Plant garlic in the fall for harvest in the spring. Plant your cloves in mid- to late-October in colder climates - before the ground freezes. The cloves that you plant in the fall will grow roots before the ground freezes. In the spring, they'll sprout delicious garlic scapes above the ground and bulbs of garlic cloves below the ground. Cover your garlic with 4 inches of mulch, and wait for a delicious spring crop.

Plant Beets Fall Harvest

Like carrots, beets get sweeter after the first frost. Stones hinder beet growth, so be sure the soil that you plant them in is well-tilled. Beets require adequate moisture, so monitor your fall garden's water level with a soil moisture monitor. Plant beets as early in the fall as possible - they mature best in temperatures around 65 degrees Fahrenheit.

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