Cold Winter Areas
Zones: 1–7a
These zones experience cold winters with extended periods of freezing temperatures. In March, monitor soil conditions, thaw cycles, and late frosts as you prepare for early outdoor sowing. Indoors, this is a busy month for starting cool-season crops and hardy flowers under lights or in a greenhouse so they are ready to transplant as soon as the weather warms.
Indoors (fresh harvests):
- Microgreens: peas, broccoli, sunflowers, arugula.
- Sprouts: alfalfa, broccoli, radish, mung
- Herbs & greens under lights: chives, parsley, mint
Crops to start indoors in good light: bunching onion, eggplant, tomato, pepper, zinnia, basil, Swiss chard, cosmos
Transplants to move outdoors (weather permitting - harden first): Onion, parsley, broccoli, cabbage, kohlrabi, arugula, pansy, viola
Crops that can be directly sown outdoors in March (assume intermittent frosts; a low tunnel or row cover makes most of these reliable): pak choi, cabbage, kale, mustard, fava bean, pea, turnip, parsnip, sweet pea
Cover crops: winter rye, fava bean, hairy vetch, red or white clover, and cover crop mixes.
Tip: This zone group covers a lot of territory. Nothing takes the place of talking with experienced gardeners in your area and, of course, watching the weather closely.
Use your USDA zone as a guide. Microclimates matter—coastal/urban spots run warmer; high elevation runs colder. 7b pockets can follow “Mild” recommendations with protection.
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![Legend: H for Heirloom, O for Organic, A for AAS Winner, F for staff favorites]()
Squash Seeds - Winter - Mini Magic F1 Blend
Mini Magic F1 Blend Hybrid Squash Seeds. Cucurbita maxima. F1 Hybrid. Non-GMO. Annual. 100 days to maturity. Mini Magic is a component blend of 3 miniature Hubbard squash. All varieties...
Squash Seeds - Winter - Blue Banana - Organic
Organic Blue Banana Winter Squash Seeds. 105 to 110 days to maturity. Cucurbita maxima. Heirloom, Non-GMO, Annual. Blue Banana Winter Squash are 20 inches long and weighs 5 lbs. or...
Squash Seeds - Winter - Goldetti F1
Goldetti F1 Hybrid Squash Seeds. Cucurbita Pepo. F1 Hybrid. Non-GMO. Annual. 100 days to maturity. Rounded cylindrical golden orange fruits ten to eleven inch long fruit. ~ 250 Seeds per...
Squash Seeds - Winter - Blue Magic Hybrid
100 days to maturity. Cucurbita maxima. Blue Magic Hybrid Winter Squash Seeds. Non-GMO, annual, hybrid. This is suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Mini...
Squash Seeds - Winter - Butter Belle Hybrid
Butter Belle Hybrid Squash Seeds. Cucurbita maxima. F1 Hybrid. Non-GMO. Annual. 90 days to maturity. Butter Belle F1 is a dark green buttercup type with orange flesh. About 250 seeds/oz....
Squash Seeds - Winter - Silver Bell
80-120 Days to maturity. Cucurbita maxima. Silver Bell Winter Squash Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Silver Bell Winter...
Squash Seeds - Winter - Orange Magic Hybrid
100 Days to maturity. Cucurbita maxima. Orange Magic Hybrid Squash Seeds. Non-GMO, annual, F1 hybrid. This delightful mini-Hubbard squash, weighing 2-3 pounds, is ideal for both cooking and ornamental use....
Squash Seeds - Winter - Jade Hybrid
85 days to maturity. Cucurbita maxima. Jade Hybrid Winter Squash Seeds. Non-GMO, annual, F1 hybrid. This is suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Compact...
Squash Seeds - Winter - Silver Edged
80-120 Days to maturity. Cucurbita maxima. Silver Edge Winter Squash Seeds. Non-GMO, open-pollinated, heirloom. Suitable for growing in fields and garden plots. Known for its large seeds with striking silver...
Squash Seeds - Winter - Pilgrim Hybrid (Organic)
80-90 Days to maturity. Cucurbita moschata . Organic Pilgrim Hybrid Squash Seeds. Non-GMO, annual, organic, F1 hybrid. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Pilgrim...
Squash Seeds - Winter - Festival F1
Festival F1 Hybrid Squash Seeds. Cucurbita pepo. F1 Hybrid. Non-GMO. Annual. 100 days to maturity. Festival is a decorative and delicious winter squash. Its skin is marbled and would look...
Squash Seeds - Winter - Mardi Gras F1 PMT
Mardi Gras F1 PMT Hybrid Squash Seeds. Cucurbita pepo. F1 Hybrid. Non-GMO. Annual. 105 days to maturity. At long last we have created a bush version of our very popular...
Squash Seeds - Winter - Golden Hubbard
100 Days to Maturity. Cucurbita maxima. Golden Hubbard Squash Vegetable Seeds. Non-GMO, annual, open-pollinated, heirloom, winter squash seeds. A favorite variation on the Hubbard squash theme. Golden Hubbard produces large...
Squash Seeds - Winter - Green Magic F1
Green Magic F1 Hybrid Squash Seeds. Cucurbita maxima. F1 Hybrid. Non-GMO. Annual. 100 days to maturity. Green Magic F1 are dark green, 5 to 7 lbs. fruits with excellent flash...
Squash Seeds - Winter - Goldetti Hybrid (Organic)
100 Days to maturity. Cucurbita pepo. Organic Goldetti Hybrid Winter Squash Vegetable Seeds. Non-GMO, annual, organic, high-yielding F1 hybrid winter squash. These rounded, cylindrical golden fruits are 10-11 inches long...
Squash Seeds - Winter - Sibley
110 Days to maturity. Cucurbita maxima. Sibley Winter Squash Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Resistant to common storage...
Squash Seeds - Japanese, Winter - Shishigatani
Squash Seeds - Japanese, Winter - Shishigatani. Heirloom, Non-GMO. Cucurbita moschata. 110 days to maturity. Warm season annual. Since the Edo period of the early 1800s, this special Japanese pumpkin...
Squash Seeds - Winter - Hubbard Baby Green (Organic)
95 to 105 days to maturity. Cucurbita maxima. Organic Hubbard Baby Green Winter Squash Seeds. Non-GMO, annual, heirloom, open-pollinated, organic. This is suitable for fields, garden plots, and raised beds....
Squash Seeds - Winter - White Ace F1
White Ace F1 Hybrid Squash Seeds. Cucurbita pepo. F1 Hybrid. Non-GMO. Annual. 70 days to maturity. A true white acorn variety. These 2 lbs. fruit are loved for their great...
Squash Seeds - Winter - Bakers Choice Marbled F1
Bakers Choice Marbled F1 Hybrid Squash Seeds. Cucurbita moschata. F1 Hybrid. Non-GMO. Annual. 90 to 100 days to maturity. Delicious and gorgeous, Winter Squash Baker‚s Choice Marbled F1 is also...
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