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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Lettuce Seeds - Pointed Taiwan Sword Leaf
75-85 day maturity. Lactuca sativa var. asparagina. Pointed Taiwan Sword Celtuce Lettuce Seeds. Non-GMO, cool-season annual heirloom. This variety of Chinese stem lettuce is perfect for home gardeners. Chinese stem...
Pak Choi Seeds - Purple Gem Hybrid
Cabbage Seeds - Pak Choi - Purple Gem - Hybrid. Non-GMO. Brassica rapa Chinensis Group. 10-15 days microgreens; 20-30 days baby leaf; 45 days full maturity. Cool season annual. Purple...
Tomato Seeds - Slicing - Katana Hybrid
60 Days to maturity (from transplant). Solanum lycopersicum. Katana Hybrid Japanese Tomato Seeds. Non-GMO, warm season annual, F1 hybrid, semi-determinate, slicing tomato. Suitable for growing in garden plots, raised beds,...
Chinese Cabbage Seeds - Blues - Hybrid
50-60 Days to maturity. Brassica rapa var Pekinensis 'Blues'. Blues Hybrid Chinese Cabbage Seeds. Annual Hybrid. This early maturity Chinese cabbage (Nappa) has many qualities like being widely adaptable for...
Pepper Seeds - Sweet - Chocolate Beauty
67-70 Days to maturity (from transplant). Capsicum annuum. Chocolate Beauty Pepper Seeds. Non-GMO, annual, open-pollinated, heirloom, high-yielding, drought tolerant, sweet pepper with no heat. 0 Scoville Heat Units. Resistant to...
Lettuce Seeds - Leaf - New Red Fire
50 to 55 Days to maturity. Lactuca sativa. New Red Fire Leaf Lettuce Seeds. Annual, Heirloom, Open Pollinated. This large ruffled and loose-leaf lettuce is green at the base of...
Broccoli Seeds - Ramoso Santana
Ramoso Santana Broccoli Seeds. 48 to 70 days. Brassica Oleracea. Non-GMO, Open Pollinated. A rare and little known crop of sprouting broccoli, Ramoso Santana is a delicious and slow-bolting Mediterranean...
Squash Seeds - Winter - Kurinishiki - Hybrid
Squash Seeds - Winter - Kurinishiki - Hybrid. Non-GMO. Cucurbita maxima. 95-105 days (45-50 days after flowering). Warm season annual. This winter squash hybrid produces uniform dark green fruit with...
Watermelon Seeds - Picnic - All Sweet (Organic)
90-105 Days to maturity. Citrullus lanatus. Organic All Sweet Watermelon Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, heat tolerant, seeded, picnic watermelon. Suitable for growing in garden plots. Resistant to Anthracnose...
Squash Seeds - Summer - Emperor's Jade Hybrid
50-60 Days to maturity. Cucurbita pepo. Emperor's Jade Hybrid Squash Seeds. Non-GMO, annual, F1 Hybrid. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. This vigorous hybrid...
Dichondra Seeds - Silver Falls
100 seed package 91-98 days. Silver Falls dichondra seeds promise one of the most hardy, resilient, and spectacular trailing plants the American Southwest has to offer. Silver Falls dichondra matures...
Carrot Seeds - Bambino
Bambino Carrot Seeds. 60 days to maturity. Daucus carota. Heirloom, Annual. Super Sweet baby gourmet carrot color develops quickly can pull early. Approximately 18,000 seeds/ounce Download Free Vegetable Growing Guide...
Pepper Seeds - Hot - Bulgarian Carrot
65-70 days. Bulgarian Carrot Hot Pepper Seeds Capsicum annuum. Non-GMO. Heirloom. Native to Bulgaria before bring brought to America in the 1970s and 1980s, Bulgarian Carrot peppers seeds (sometimes also...
Cucumber Seeds - Carolina F1
50 Days to maturity. Cucumis sativus. Carolina Hybrid Cucumber Seeds. Non-GMO, annual, F1 hybrid, gynoecious, pickling cucumber. Suitable for growing in fields, containers (with support), garden plots, raised beds, and...
Eggplant Seeds - Bride F1
Bride F1 Hybrid Eggplant Seeds. Solanum melongena. F1 Hybrid. Non-GMO. Annual. 70 days to maturity. Eggplant Bride F1 is a beautiful hybrid Asian eggplant known for its mild flavor and...
Lettuce Seeds - Leaf - Merlot
Merlot Leaf Lettuce Seeds. 55 days to maturity. Lactuca sativa. Heirloom, Annual. Merlot is a loose-leaf type with an intense deep burgundy color. Approximately 25,000 seeds/ounce. Lettuce Seeds - Leaf...
Melon Seeds - Galia - Gallo Hybrid
70 Days to maturity. Cucumis melo. Gallo Galia Melon Seeds. A non-GMO, annual, F1 hybrid, heat-tolerant Mini Galia Melon. Suitable for growing in containers, garden plots, raised beds, and greenhouses....
Corn Seeds - Ornamental - Earth Tones Dent
100 Days to maturity. Zea mays. Ornamental - Earth Tone Dent Corn Seeds. Non-GMO, annual, open-pollinated, heirloom, Dent Corn. Suitable for growing in garden plots or raised beds. Corn tolerates...
Pea Seeds - Shelling - Green Arrow (Treated)
65-75 Days to maturity. Pisum sativum. Green Arrow Pea Seeds (Treated). Non-GMO, annual, open-pollinated, heirloom, treated pea seeds. Long, slim, 4.5-inch pods grow in pairs on strong 28-inch vines. Suitable...
Rudbeckia Seeds - Green Wizard
91-105 days maturity. Rudbeckia occidentalis. Rudbeckia Green Wizard Seeds. Non-GMO, Perennial. Ornamental. Green Wizard rudbeckia seeds grow one of the summer's most unique and exclusive blooms boasting 3-5 inch black...
Amaranthus Seeds - Early Splendor
70-77 Days to maturity. Amaranthus tricolor. Early Splendor Amaranthus Seeds. Non-GMO, heirloom, annual. Ornamental Plant. Edible. Early Splendor Amaranthus seeds are a stunning, simple, and exotic tropical plant ideal for...
Pepper Seeds - Hot - Korean - Gochu Vita Green...
100-125 Days to maturity (from transplant). Capsicum annuum. Gochu Vita Green Pepper Seeds. Non-GMO, annual, hybrid, hot-type pepper with mild heat levels. 500 to 1,500 Scoville Heat Units. Suitable for...
Tomato Seeds - Slicing - Costoluto Genovese
80-90 Days to maturity (from transplant). Solanum lycopersicum. Costoluto Genovese Tomato Seeds. Non-GMO, warm season annual, open-pollinated, heat tolerant, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds,...
Radish Seeds - Pink Beauty
Pink Beauty radishes are uniform light pink with tender white flesh. They have a delicious sweet and spicy flavor. They are easy to grow at home, and produce high yields....
Cucumber Seeds - Pickling - Calypso Hybrid (Organic)
50 Days to maturity. Cucumis sativus. Organic Calypso Hybrid Cucumber Seeds. Non-GMO, annual, organic, F1 hybrid, gynoecious, pickling cucumber. Suitable for growing in fields, containers (with support), garden plots, raised...
Cabbage Seeds - Brunswick (Organic)
70 Days to maturity. Brassica oleracea ’Brunswick’. Organic Brunswick Cabbage Seeds. Non-GMO, cool weather annual. Introduced in 1824 to the United States from Germany, this cabbage is excellent for making...
Shallot Sets - Yellow
10 Sets This is a pre-order item and is expected to ship in March to April for spring planting. Other seeds, supplies, or kits ordered with this product may ship...
Delosperma - Ice Plant (Pelleted)
120 days to maturity. Delosperma cooperi. Delosperma Ice Plant Seeds. Non-GMO, perennial, ornamental flower. Ice Plant delosperma seeds grow exotic, eye-catching, and resilient succulents ideal for many dry and arid...
Eggplant Seeds - Galaxy of Stars
Galaxy of Stars Eggplant Seeds. 57 days to maturity. Solanum melongena. Open Pollinated, Annual. Galaxy of stars is a beauty at 3 to 4 inches long. These plump fruits are...
Pepper Seeds - Ornamental - Autumn Time
Autumn Time Ornamental Pepper Seeds. 60 - 85 days to maturity. Capsicum annuum. Open Pollinated. Annual. Can be grown in containers. Pepper Autumn Time's distinctive dark purple foliage categorizes this...
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