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]()
Salpiglossis Seeds - Royale Series
91-98 Days to maturity. Salpiglossis sinuata. Salpiglossis Royale Series Seeds. Non-GMO, Annual. Royale Series salpiglossis seeds grow one of the summer's most exotic, colorful, and exclusive blooms. Royale Series seeds...
Squash Seeds - Table Gold
Cucurbita pepo (90 days) Created by Dr. Oved Shifriss, this highly productive, golden acorn-shaped squash has a fantastic nutty flavor. Squash Seeds - Table Gold Table Gold is earlier than...
Cucumber Seeds - Brown Russian
50 Days to maturity. Cucumis sativus. Brown Russian Cucumber Seeds. Non-GMO, annual, open-pollinated, heirloom, monoecious, burpless, slicing cucumber. Suitable for growing in fields, containers (with support), garden plots, raised beds,...
Gypsophila Seeds - Gypsy Deep Rose
56-63 Days to maturity. Gypsophila muralis’. Gypsophila Gypsy Deep Rose Seeds. Non-GMO, Annual. Gypsy Deep Rose Gypsophila seeds are an essential and award-winning crop whether kept in the garden or...
Gourd Seeds - New Jang Sin - Hybrid
80 Days to maturity after transplanting. Benincasa hispida ’chieh-qua’. New Jang Sin Gourd Seeds. Non-GMO, warm-season, annual, hybrid. This jointed gourd, hairy melon, or mokwa variety is an early to...
Tomato Seeds - Slicing - Cal Ace VF
85 Days to maturity (from transplant). Solanum lycoperscium. Cal Ace VF Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, determinate, heat tolerant, slicing tomato. Suitable for growing in garden plots, raised beds,...
Amaranth Seeds - All Red Leaf - Microgreens Seeds
10 Days to Harvest. Amaranthus cruentus. All Red Leaf Amaranth Microgreens Seeds. Organic. Non-GMO. Microgreens. High Germination. Amaranth is a pseudo-grain that can be grown as sprouts or microgreens, ground...
Pepper Seeds - Hot - Tepin
100 Days to maturity (from transplant). Capsicum annuum var. glabriusculum. Tepin Hot Pepper Seeds. Non-GMO, annual, open-pollinated, deer resistant, heat tolerant, drought tolerant, hot pepper with hot heat levels. 50,000-100,000...
Basil Seeds - Culinary Blend (Organic)
60-90 Days to maturity. Ocimum basilicum. Organic Culinary Blend Basil Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. This blend of...
Bean Seeds - Bush - Karikachi #3 Edamame Soybean
70-90 Days to maturity. Glycine max. Karikachi #3 Soybean Seeds. Non-GMO, annual, open-pollinated, heirloom, high-yielding, bush, shell, soybean, Asian bean. Suitable for growing in containers, garden plots, raised beds, and...
Gourd Seeds - Monster Mix F1
Monster Mix F1 Hybrid Gourd Seeds. Cucurbita pepo. F1 Hybrid. Non-GMO. Annual. 120 days to maturity. Bush plants produce all colors: orange yellow white and green gourds. ~ 850 Seeds...
Tomato Seeds - Slicing - Beefsteak White
85 Days to maturity (from transplant). Solanum lycoperscium. Beefsteak White Tomato Seeds. Non-GMO, annual, heirloom, open-pollinated, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds, and greenhouses. Also...
Basil Seeds - Anise
Non-GMO, Heirloom Anise Basil Herb Seed from True Leaf Market. Ocimum basilicum. As basil has many different types, Anise Basil is a sweet cultivar that originated from regions in Southeast...
Pumpkin Seeds - Lumina (treated)
Non-GMO Lumina treated pumpkin seeds are ready in 90 days. This white pumpkins is medium-sized, and is about 10 to 15 pounds at full growth. Lumina pumpkies are white with...
Pumpkin Seeds - Jack Be Little - Organic
Organic Jack Be Little Pumpkin Seeds. 85 - 110 days to maturity. Cucurbita pepo. Heirloom, Non-GMO, Annual. Delightful miniature pumpkin with small vigorous vines. ~ 225 Seeds/ounce. Download Free Vegetable...
Peppers From Hell Seed Starter 6-Pack
Are you ready to kick it up a notch?? The infamous ghost pepper is also known as Bhut Jolokia. This pepper is considered to be one of the hottest peppers...
Cucumber Seeds - Addis
55-65 Days to maturity. Cucumis sativus. Addis Cucumber Seeds. Non-GMO, annual, open-pollinated, heirloom, monoecious, pickling cucumber. Suitable for growing in fields, containers (with support), garden plots, raised beds, and greenhouses...
Hollyhock Seeds - Queeny Purple
2nd-year maturity. Alcea rosea. Hollyhock Queeny Purple Seeds. Non-GMO, Perennial/Biennial. Queeny Purple seeds are an exciting and award-winning twist to the traditional summertime hollyhock that promises to excite your porch,...
Watermelon Seeds - Icebox - Early Crimson Treat
70 Days to maturity. Citrullus lanatus. Early Crimson Treat Watermelon Seeds. Non-GMO, annual, open-pollinated, heirloom, heat tolerant, seeded, icebox watermelon. Early Crimson Treat Watermelon Seeds. Both light and dark green...
Tomato Seeds - Slicing - Gold Medal
90 Days to maturity (from transplant). Solanum lycopersicum. Gold Medal Tomato Seeds. Non-GMO, warm season annual, open-pollinated, heirloom, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds, and...
Squash Seeds - Winter - Sweet Keeper
110 Days to maturity. Cucurbita maxima. Sweet Keeper Winter Squash Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Resistant to common...
Tomato Seeds - Slicing - Ace 55 VF (Organic)
85 Days to maturity (from transplant). Solanum lycoperscium. Organic Ace 55 VF Tomato Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, determinate, slicing tomato. Suitable for growing in garden plots, raised beds,...
Cucumber Seeds - Garden Sweet Burpless Hybrid (Organic)
55 Days to maturity. Cucumis sativus. Organic Garden Sweet Burpless Hybrid Cucumber Seeds. Non-GMO, annual, organic, F1 hybrid, monoecious, burpless, slicing cucumber. Suitable for growing in fields, containers (with support),...
Melon Seeds - Cantaloupe - Rocky Ford Green Flesh
89 Days to maturity. Cucumis melo. Rocky Ford Green Flesh Cantaloupe Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, heat-tolerant Cantaloupe Melon. Suitable for growing in containers, garden plots, raised beds,...
Bean Seeds - Bush - Tohya Soybean
85 Days to maturity. Glycine max. Tohya Edamame Soybean Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, high-yielding, bush, shell, soybean, Asian bean. Suitable for growing in containers, garden plots, raised beds,...
Gourd Seeds - Buab Khom - Hybrid
50-60 days to maturity. Luffa acutangula ’Buab Khom’. Buab Khom Gourd Seeds. Non-GMO, warm-season, annual, hybrid. Buab Khom is a hybrid ridge gourd that yields many high-quality fruits. The fruits...
Melon Seeds - Honeydew - Orange Flesh (Organic)
105 Days to maturity. Cucumis melo. Organic Orange Flesh Honeydew Melon Seeds. A non-GMO, annual, organic, open-pollinated, heirloom, heat-tolerant Honeydew Melon. Suitable for growing in containers, garden plots, raised beds,...
Zinnia Seeds - Red Beauty - Organic
60-70 Days to maturity. Zinnia elegans. Red Beauty Zinnia Seeds. Non-GMO, organic, annual. These zinnias are a perfect choice for any grower or hobby gardener looking for the best cut...
Tomato Seeds - Slicing - Giant Belgium Yellow
82-95 Days to maturity (from transplant). Solanum lycopersicum. Giant Belgium Yellow Tomato Seeds. Non-GMO, warm season annual, open-pollinated, heirloom, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds,...
Watermelon Seeds - Icebox - Triple Express Hybrid
Triple Express F1 Hybrid Watermelon Seeds. Citrullus lanatus. F1 Hybrid. Non-GMO. Annual. 80 days to maturity. Seedless. Triple Express F1 is an early Crimson Sweet triploid, with a firm flesh...
Shiso Herb Seeds (Perilla) - Jeok Ssam Ip
Due to crop failure, this seed is unavailable until 2027. Add your email to receive a notification when it is available again. 70 days to maturity. Perilla frutescens. Shiso Herb...
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