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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Pak Choi Seeds - Tall White Stem - Hybrid
25-35 days for Miao (early stage), 45-50 Days to maturity. Brassica rapa var. Chinensis. Tall White Stem Pak Choi Hybrid Seeds.Non-GMO, Annual, Hybrid. Cool-Warm Season. Excellent pak choi variety for...
Squash Seeds - Summer - Zucchini Golden
55-65 days. Golden Zucchini Summer Squash Seeds. Cucurbita pepo. Annual. Open Pollinated. Non-GMO Heirloom Golden Zucchini is the summer squash to grow in the garden. it's ready in 55 days...
Squash Seeds - Summer - Golden Glory Hybrid
53 days. The 7 to 8 inch, 2-3" in diameter, smooth, waxy-skinned, gold fruits have creamy white, excellent tasting flesh. The vigorous open plant bears fruit of superior quality and...
Swiss Chard Seeds - Lucullus
50 days. The Lucullus Swiss Chard seed variety produces large green leaves and white stems. This variety is one of the best for gardeners looking for a swiss chard that...
Chives Seeds - Garlic (Organic)
Non-GMO, Heirloom Organic Garlic Chives Herb Garden Seed from True Leaf Market. Allium tuberosum. Chives are native to regions in Asia and Europe. Organic Garlic Chives are also called "Chinese...
Pepper Seeds - Hot - Habanero Orange
100-109 Days to maturity (from transplant). Capsicum chinense. Habanero Orange Pepper Seeds. Non-GMO, annual, open-pollinated, heirloom, deer resistant, heat tolerant, drought tolerant, hot pepper with extra hot heat levels. 100,000...
Tomato Seeds - Cherry - Chocolate Cherry
70 Days to maturity (from transplant). Solanum lycoperscium. Chocolate Cherry Tomato Seeds. Non-GMO, annual, open-pollinated, indeterminate cherry tomato. Suitable for growing in garden plots, raised beds, greenhouses, and containers. Resistant...
Carrot Seeds - Purple
65-70 days. Purple carrot Seeds. Daucus carota subsp. sativus. Non-GMO. Heirloom. The Purple Carrot is unique in that it appears quite differently when it is sliced than when it is...
Adzuki Bean - Organic - Sprouting Seeds
3-4 Days to Harvest. Vigna angularis. Organic Adzuki Bean Sprouting Seeds. With over 30 grams of plant-based protein per cup, these organic sprouts will add nutrients and a fresh crunch...
Radish Seeds - Purple Plum
Non-GMO, Heirloom Purple Plum Radish Seeds. 25-30 days. Bright purple skin, firm white flesh, crisp, sweet and mild all season, never pithy of hot, hardy and adaptable. Download Free Vegetable...
Tomato Seeds - Paste - La Roma IV Hybrid
76 Days to maturity (from transplant). Solanum lycoperscium. La Roma IV Hybrid Tomato Seeds. Non-GMO, annual, F1 hybrid, determinate, paste tomato. Suitable for growing in garden plots, raised beds, and...
Tomato Seeds - Slicing - Brandywine Pink
90 Days to maturity (from transplant). Solanum lycopersicum. Brandywine Pink Tomato Seeds. Non-GMO, annual, potato leaf, open-pollinated, heirloom, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds, and...
Onion Seeds - Short - Texas 1015 Super Sweet
110 Days to maturity. Allium cepa. Texas 1015 Super Sweet Onion Seeds. Non-GMO, annual, open-pollinated, heirloom, bulbing, short-day onion. Suitable for growing in greenhouses, garden plots, raised beds, and containers....
Pepper Seeds - Sweet - Mini Bell Yellow
60 Days to maturity (from transplant). Capsicum annuum. Mini Bell Yellow Pepper Seeds. Non-GMO, annual, open-pollinated, sweet-type pepper with no heat levels. 0 Scoville Heat Units. Suitable for growing in...
Tomato Seeds - Cherry - Rainbow Cherry Mix (Organic)
80 Days to maturity (from transplant). Solanum lycoperscium. Rainbow Cherry Mix (Organic) Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, indeterminate, cherry tomato. Suitable for growing in garden plots, raised beds, and...
Eggplant Seeds - Long Purple (Organic)
80 days. The Long Purple variety of eggplant grows to be up to eight to ten inches long . The Long Purple reaches maturity in eighty days and is suitable...
Tomato Seeds - Slicing - Jet Star Hybrid
72 Days to maturity (from transplant). Solanum lycopersicum. Jet Star Hybrid Tomato Seeds. Non-GMO, warm season annual, F1 hybrid, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds,...
Purslane Seeds - Green
Non-GMO Purslane is ready to harvest in 50 days and is one of the most nutritionally dense foods you can grow in the garden. Performs best in hot weather and...
Tomato Seeds - Slicing - Black Krim (Organic)
75 Days to maturity (from transplant). Solanum lycopersicum. Organic Black Krim Tomato Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, heat tolerant, indeterminate, slicing tomato. Suitable for growing in garden plots, raised...
Pea Seeds - Snap - Sugar Ann
Non-GMO. Heirloom. Sugar Ann Snap Pea Vegetable Garden Seeds. Pisum sativum. Sugar snap peas are a cross between garden and snow peas, as Sugar Ann Snap Peas were later developed...
Strawberry Seeds - Berries Galore Hybrid Pink
Package of 100 seeds. 75 days. Everbearing runner variety. In full sun, medium-large fruit saturated with sweetness and nutritious goodness; a fast grower; can be harvested every 3 to 4...
Lettuce Seeds - Leaf - Ruby Red
Non-GMO Ruby Red Leaf Lettuce is ready in 35-45 days. Lettuce forms compact plants with loose, crumpled reddish-green leaves. Ruby Red is the darkest red of all red lettuces, won't...
Tomato Seeds - Cherry - Isis Candy
67 Days to maturity (from transplant). Solanum lycoperscium. Isis Candy Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, indeterminate, cherry tomato. Suitable for growing in garden plots, raised beds, greenhouses, containers, and...
Corn Salad (Mache) Seeds - Dutch Broad Leaved
50 days. Forms rosettes of smooth, spoon-shaped leaves coveted by fine chefs. Prized as early spring green. Fairly hardy this green can be mulched with straw to overwinter in cold...
Pepper Seeds - Sweet - Shishito
60-69 Days to maturity (from transplant). Capsicum annuum. Shishito Pepper Seeds. Non-GMO, annual, open-pollinated, heirloom, high-yielding, sweet-type pepper with little to mild heat levels. 100 to 1,000 Scoville Heat Units....
Beet Seeds - Sugar Beet
Beta vulgaris (90 days) Sugar beets are a natural source of sugar and where most of the sugar industry derives its sugar from these days. Beets are up to 1...
Broccoli Seeds - Green Sprouting Calabrese
brassica oleracea var. capitata (60-90 days) Start Green Sprouting broccoli early in the season and by early summer you will have tons of sweet broccoli. Harvest the central head then...
Rutabaga Seeds - American Purple Top
90 days. Brassica napus var. napobrassica. American Purple Top Rutabaga Seeds. Non-GMO, annual, heirloom, open-pollinated. This crop is suitable for garden plots, fields, raised beds, and containers. American Purple Top...
Broccoli Seeds - Di Cicco (Organic)
48 to 70 days. Annual. Organic Heirloom seeds. Di Cicco is an Italian heirloom broccoli dating back from 1890. Very vigorous plants produce heavy crops of 3 to 4 inch...
Squash Seeds - Summer - Cocozelle Zucchini
50-60 Days to maturity. Cucurbita pepo. Cocozelle Zucchini Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in garden plots, raised beds, and containers. A traditional Italian heirloom introduced in the...
Corn Seeds - Sweet - Silver Queen Hybrid
88 Days to maturity. Zea mays. Silver Queen Hybrid Sweet Corn Seeds. Non-GMO, annual, hybrid, Sweet Corn. Suitable for growing in garden plots or raised beds. Corn tolerates heat and...
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