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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Onion Seeds - Bunching - Heshiko (Treated)
60-80 Days to maturity. Allium fistulosum. Heshiko Treated Onion Seeds (Thiram fungicide). Non-GMO, perennial, open-pollinated, heirloom, cold tolerant, drought tolerant, bunching onion. Suitable for growing in greenhouses, garden plots, raised...
Tomato Seeds - Salad - Sub Arctic Plenty
50-60 Days to maturity (from transplant). Solanum lycopersicum. Sub Arctic Plenty Tomato Seeds. Non-GMO, warm season annual, open-pollinated, heirloom, determinate, salad tomato. Suitable for growing in garden plots, raised beds,...
Zinnia Seeds - Magellan Series - Orange
55-60 Days to maturity. Zinnia elegans. Magellan Orange Zinnia Seeds. Non-GMO, organic, F1 hybrid, annual. Magellan Zinnia Orange seeds grow tough and resilient zinnias, best suited for gardens prone to...
Bean Seeds - Bush - Black Valentine
50-65 Days to maturity. Phaseolus vulgaris. Black Valentine Bush Bean Seeds. Non-GMO, annual, open-pollinated, heirloom snap or shell bush bean. Suitable for growing in containers, garden plots, raised beds, and...
Tomato Seeds - Salad - Czech Bush
70 Days to maturity (from transplant). Solanum lycoperscium. Czech Bush Tomato Seeds. Non-GMO, annual, hybrid, determinate, salad tomato. Suitable for growing in garden plots, raised beds, greenhouses, and containers. Stakeless,...
Lettuce Seeds - Rouge d Hiver - Organic
Lactuca sativa. 28 days for baby leaf, 60 days full grown. Before grocery stores standardized lettuce into pale green sameness, gardeners in 19th century France were growing Rouge d'Hiver Lettuce,...
Onion Seeds - Bunching - Heshiko
60-80 Days to maturity. Allium fistulosum. Heshiko Onion Seeds. Non-GMO, perennial, open-pollinated, heirloom, cold tolerant, drought tolerant, bunching onion. Suitable for growing in greenhouses, garden plots, raised beds, and containers....
Lettuce Seeds - Batavian - Nevada
Nevada Batavian Lettuce Seeds. 48 days to maturity. Lactuca sativa. Open Pollinated. Annual. A Summer Crisp-type lettuce. Nevada's hardy green leaves are crisp with a smooth, fresh taste. ~ 25,000...
Tomato Seeds - Slicing - Bush Champion II Hybrid
70 Days to maturity (from transplant). Solanum lycoperscium. Bush Champion II Hybrid Tomato Seeds. Non-GMO, annual, F1 hybrid, determinate, slicing tomato. Suitable for growing in garden plots, raised beds, greenhouses,...
Pea Seeds - Snap - Purple Magnolia
60-70 Days to maturity. Pisum sativum. Purple Magnolia Snap Pea Seeds. Non-GMO, cool-season annual, hybrid snap peas. Suitable for growing in containers, garden plots, raised beds, and greenhouses. The Purple...
Celosia Seeds - Crested - Prestige Scarlet
85-95 Days to maturity. Celosia plumosa. Prestige Scarlet Crested Celosia Flower Seeds. Non-GMO, Annual. These celosias won the All American Selections for 1997 and continue to wow the world! They...
Melon Seeds - Cantaloupe - Golden Delicious
75 Days to maturity. Cucumis melo var. cantalupensis.. Golden Delicious Cantaloupe Melon Seeds. A non-GMO, annual, heirloom, open-pollinated, heat-tolerant Cantaloupe Melon. Suitable for growing in garden plots, raised beds, and...
Chrysanthemum Seeds - Snowland
70-77 Days To Maturity. Leucanthemum paludosum. Annual; Non-GMO. Snowland Leucanthemum seeds boast a dwarfed full sun alternative to the classic American daisy. Snowland seeds promise hardy 6-9 inch tall creeping...
Celosia Seeds - Plumed - New Look (Pelleted)
85-95 Days to maturity. Celosia plumosa. New Look Plumed Celosia Flower Seeds. Non-GMO, Annual. The All American Selections Winner for 1988 offers season-long garden color with constant blooms. These vibrant...
Dahlberg Daisy Seeds - Golden Fleece
70-77 Days to maturity. Thymophylla tenuiloba. Golden Fleece Dahlberg Daisy Seeds. Non-GMO, Annual. Golden Fleece Dahlberg daisy seeds grow a vigorous southwestern favorite ideal for many arid gardens across the...
Tomato Seeds - Cherry - Gum Drop Brown Hybrid
75 Days to maturity (from transplant). Solanum lycoperscium. Gum Drop Brown Hybrid Tomato Seeds. Non-GMO, annual, F1 hybrid, indeterminate, cherry tomato. Suitable for growing in garden plots, raised beds, and...
Bean Seeds - Bush - Greencrop
50-65 Days to maturity. Phaseolus vulgaris. Greencrop Bush Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, AAS winner, high-yielding, heat-tolerant, bush, snap, romano, green bean. Suitable for growing in containers, garden plots,...
Tomato Seeds - Slicing - Beefsteak Pink
90 Days to maturity (from transplant). Solanum lycoperscium. Beefsteak Pink Tomato Seeds. Non-GMO, annual, heirloom, open-pollinated, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds, and greenhouses. Pink...
Myosotis Compindi (Forget-Me-Not) Seeds
2nd-year maturity. Myosotis sylvatica. Forget-Me-Not Seeds. Non-GMO, Perennial. Forget-Me-Not Myosotis Compindi seeds are one of the United Kingdom's most popular and thriving blooms and promise to add an equal amount...
Tomato Seeds - Cherry - Patio Choice Red Hybrid
65 Days to maturity (from transplant). Solanum lycoperscium. Patio Choice Red Hybrid Tomato Seeds. Non-GMO, annual, F1 hybrid, determinate, cherry tomato. Suitable for growing in garden plots, raised beds, greenhouses,...
Tomato Seeds - Slicing - Dakota Sport (Organic)
65-75 Days to maturity (from transplant). Solanum lycopersicum. Organic Dakota Sport Tomato Seeds. Non-GMO, warm season annual, organic, open-pollinated, heirloom, indeterminate, slicing tomato. Suitable for growing in garden plots, raised...
Melon Seeds - Cantaloupe - Hearts of Gold (Organic)
80-90 Days to maturity. Cucumis melo. Organic Hearts of Gold Cantaloupe Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, heat-tolerant Cantaloupe Melon. Suitable for growing in garden plots, raised beds, and...
Squash Seeds - Table King Bush Acorn (Organic)
80 days to maturity. Cucurbita pepo. Organic Table King Bush Acorn Winter Squash Seeds. Non-GMO, annual, heirloom, open-pollinated, AAS winner 1974. Suitable for growing in fields, garden plots, raised beds,...
Watermelon Seeds - Icebox - Bush Jubilee
90 Days to maturity. Citrullus lanatus. Bush Jubilee Watermelon Seeds. Non-GMO, annual, open-pollinated, heirloom, heat tolerant, seeded, Icebox watermelon. Vines spread 3-5 ft. Produces watermelons that are about 10-13 lbs....
Corn Seeds - Popcorn - Neon Pink
85-105 Days to maturity. Zea mays. Neon Pink Corn Seeds. Non-GMO, annual, open-pollinated, heirloom, Pop Corn. Suitable for growing in garden plots or raised beds. Corn tolerates heat and drought-prone...
Pepper Seeds - Hot - Cayenne Orange
75 Days to maturity (from transplant). Capsicum annuum. Cayenne Orange Hot Pepper Seeds. Non-GMO, annual, open-pollinated, deer resistant, drought-tolerant, heat-tolerant, hot pepper with hot heat levels. 30,000 to 50,000 Scoville...
Nicotiana Seeds - Perfume Deep Purple (Pelleted)
63-70 days to maturity. Nicotiana alata. Nicotiana Perfume Deep Purple Seeds. Non-GMO, Annual. Ornamental. Perfume Deep Purple nicotiana seeds grow one of the world's most stunning, fragrant, and award-winning blooms...
Bean Seeds - Bush - Tankuro Edamame Soybean
85 Days to maturity. Glycine max. Tankuro 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, and...
Rhubarb Crowns - Spring - Canadian Red
This is a pre-order item and is expected to ship from March to April. Other seeds, supplies, or kits ordered with this product will ship separately. This product only ships...
Shasta Daisy Seeds - Crazy Daisy
2nd-year maturity. Leucanthemum × superbum. Shasta Daisy Crazy Daisy Seeds. Non-GMO, Perennial. Ornamental. Crazy Daisy seeds grow a fun and exciting twist to the traditional shasta daisy. Crazy Daisy seeds...
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