![]() ![]() Temperatures inside a cold frame or plastic tunnel will usually be 10 to 20 degrees warmer than the outside temperature. You can grow vegetables in a cold frame or plastic tunnel in containers or directly in the soil or seedbed under the frame or tunnel. Cold frames and plastic hoop tunnels are season-extending devices. Plant vegetables for winter harvest in a cold frame or plastic hoop tunnel or have portable hoop tunnels or cold frames read to set over plants when a frost or freeze threatens.Ī cold frame or a plastic hoop tunnel will protect vegetables from cold temperatures. If you expect frost or a hard freeze before harvest, plan to protect the plants from freezing temperatures. Plastic tunnels for growing vegetables in winter Grow winter crops in a cold frame or plastic tunnel Make sure seeds have time to reach maturity before freezing weather or plan to protect plants from freezing temperatures. Almost all vegetable seeds need warm soil to germinate. Seedlings have a 4 to 6-week head start over the seeds you sow today. To cut short the number of days a plant will need in the garden is to transplant out seedlings. ![]() (The additional two weeks will allow for slower plant growth as day length decreases and temperatures cool as summer fades into autumn and then to winter.) Count backward an additional two weeks and mark that planting date on your calendar.Count backward from the average first frost date the number of days to maturity for the crop you are planting.Mark the average date of the first frost in your garden on the calendar.Check the seed packet for the number of days to maturity for the crop you plan to plant.To know when to plant the winter garden, follow these steps: Root crops do best in cool weather as do most leafy crops. Autumn and winter crops replace summer crops as days shorten and temperatures begin to drop. They use the shorter days of autumn to direct their energy into leaf and root formation and don’t bother with flowering and seeding or fruiting as summer vegetables do.Ĭool-season crops for winter harvest can be planted in almost all gardens by the end of summer–earlier in very cold-winter regions where summer is short. Leafy greens and crops such as beets, cabbage, kale, carrots, lettuce, parsnips, spinach, and turnips can be grown in winter. Winter vegetable garden month-by-month to-dosĬool-season crops are best for the winter vegetable garden.When to sow and harvest winter vegetables.10 steps to start a winter vegetable garden.Grow winter crops in a cold frame or plastic tunnel. ![]()
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