January and February: Plant cabbage and broccoli starts inside under grow lights. Plant tomato seeds inside under grow lights. Check the greens growing in your tunnel garden. As spring comes and the weather grows warmer they may need more water.
March and April: Plant cabbage starts, broccoli starts, beet seeds, carrot seeds, cilantro, and potato seeds inside a tunnel garden. As the weather grows warmer you can remove the tunnel over your greens. You may also plant tomato starts, pepper starts, and basil starts inside a tunnel garden.
May: You may remove the plastic over your broccoli, cabbage, and cilantro. When you are sure you are past the last frost you can plant squash, pumpkin, melon, and bean seeds.
June: Remove plastic over tomatoes and peppers. Make sure your garden is well mulched and plant corn.
July: Start fall cabbage and broccoli under grow lights.
August: Plant beets, green onions, radishes, carrots, and swiss chard seeds. Keep them wet!
September: Plant spinach, lettuce, kale and any other winter greens.
Harvest winter squash and allow it to cure for two weeks. After a frost, it develops a harder skin and then can be brought inside, or kept in a root cellar or garage.
October: It still isn’t too late to plant: spinach, lettuce, kale, collards, or greens.
If a frost is coming be prepared to place your low tunnel over vegetables. Whether you want to prolong the growing season for tomatoes or cover your cold weather plants for the winter season, this is the time to set up your low tunnels. During the day, they will still need to be vented. If you want onions starts for next spring, plant onion seed now.
November: Plant: If you have a warm fall, plant more greens. If it is above freezing, continue to water inside tunnels. From year to year the weather varies greatly, so watch the weather and your plants.
December: Plant peas. Water your tunnel garden once a week or so if the weather is above freezing