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]()
Leaf Radish Seeds - Saisai Purple - Hybrid
30 to 40 Days to maturity. Raphanus sativus. Saisai Purple Leaf Radish Seeds. Annual, Hybrid. This red-stemmed leaf radish will stand out in any dish you make with it! Saisai...
Anemone Bulbs - Carmel Bordeaux
10 Bulb Bag This is a pre-order item that is expected to ship in Late October to November for fall planting. Other seeds, supplies, or kits ordered with this product...
Pepper Seeds - Sweet - Pretty N Red Hybrid
60-69 Days to maturity (from transplant). Capsicum annuum. Pretty N Red Hybrid Pepper Seeds. Non-GMO, annual, F1 hybrid, sweet pepper with no heat levels. 0 Scoville Heat Units. Suitable for...
Pepper Seeds - Hot - Tobago Seasoning
90-99 Days to maturity (from transplant). Capsicum chinense. Tobago Seasoning Pepper Seeds. Non-GMO, annual, open-pollinated, heirloom, hot-type pepper with mild heat levels. 500 to 1,000 Scoville Heat Units. Suitable for...
Bean Seeds - Bush - Dark Red Kidney
90-100 Days to maturity. Phaseolus vulgaris. Dark Red Kidney Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, high-yielding, bush, shelling bean. Suitable for growing in containers, garden plots, raised beds, and greenhouses....
Pepper Seeds - Hot - Jamaican Red
90-100 Days to maturity. Capsicum chinense. Jamaican Red Hot Pepper Seeds. Non-GMO, open-pollinated, heirloom, hot pepper seeds with extra hot heat levels. 100,000 to 350,000 Scoville Heat Units. This spicy...
Tomato Seeds - Salad - Variegated
90 Days to maturity (from transplant). Solanum lycopersicum. Variegated Tomato Seeds. Non-GMO, open-pollinated, indeterminate, warm season, annual, salad tomato. Suitable for growing in garden plots, raised beds, greenhouses, and large...
Tomato Seeds - Slicing - Early Choice Black F1
65-70 Days to maturity (from transplant). Solanum lycopersicum. Early Choice Black Hybrid Tomato Seeds. Non-GMO, warm season annual, F1 hybrid, indeterminate, salad tomato seeds. Suitable for growing in garden plots,...
Lettuce Seeds, Leaf - Selway
45 to 70 Days to maturity. Lactuca sativa. Selway Leaf Lettuce Seeds. Annual, Heirloom, Open Pollinated. Selway is a tightly frilled and very deep red leaf Lolla Rosa type lettuce....
Tomato Seeds - Red Plum
Red Plum Tomato Seeds. 78 days. Non-GMO, high-germination, heirloom, open pollinated, annual. Solanum lycopersicum. Red Plum tomato seeds deliver a delicious and classic staple to many kitchens and gardens! The...
Pepper Seeds - Sweet - Sweet Ristra F1
Sweet Ristra F1 Hybrid Sweet Pepper Seeds. Capsicum annuum. F1 Hybrid. Non-GMO. Annual. 85 to 90 days to maturity. Imagine a cayenne pepper that is sweet no heat at all....
Anemone Bulbs - Galilee Pastel Mix
10 Bulb Bag This is a pre-order item that is expected to ship in Late October to November for fall planting. Other seeds, supplies, or kits ordered with this product...
Wildflower Seeds - Backyard Bird Lover's Mix
60-90 Days to maturity. Backyard Bird Lover’s Wildflower Mix Flower Seeds. Non-GMO, open-pollinated. A mix of annuals, perennials, and biennials for zones 3, 4, 5, 6, 7, 8, and 9....
Peony Bulbs - Karl Rosenfield
This is a pre-order item that is expected to ship in October for fall planting. Other seeds, supplies, or kits ordered with this product will ship separately. This product only...
Poppy Seeds - Danish Flag
60-75 Days to maturity. Papaver somniferum. Danish Flag Poppy Flower Seeds. Non-GMO, annual, open-pollinated, heirloom flowers. This very large flowering variety of poppy produces crimson red flowers with a distinct...
Bean Seeds - Bush - Red Swan
55-60 Days to maturity. Phaseolus vulgaris. Red Swan Bean Seeds. Non-GMO, annual, open-pollinated, bush, snap, specialty bean. Suitable for growing in containers, garden plots, raised beds, and greenhouses. The Red...
Tulip Bulbs - Parrot - Mix
10 Bulb Bag This is a pre-order item that is expected to ship in October for fall planting. Other seeds, supplies, or kits ordered with this product will ship separately....
Tomato Seeds - Slicing - Boxcar Willie (Organic)
80 Days to maturity (from transplant). Solanum lycopersicum. Organic Boxcar Willie Tomato Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds, and...
Tomato Seeds - Federle
85 Days to maturity (from transplant). Solanum lycopersicum. Federle Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, indeterminate, paste tomato. Also known as Federle’s Italian Paste tomato. Plant produces 7-inch-long red paste...
Tulip Bulbs - Triumph - Mix
10 Bulb Bag This is a pre-order item that is expected to ship in October for fall planting. Other seeds, supplies, or kits ordered with this product will ship separately....
Pepper Seeds - Hot - Enchantment Hybrid
70 Days to maturity (from transplant). Capsicum annuum. Enchantment Hybrid Pepper Seeds. Non-GMO, annual, F1 hybrid, hot pepper with medium heat levels. 1,000 to 3,000 Scoville Heat Units. Suitable for...
Tomato Seeds - Salad - Red Zebra
75-80 Days to maturity (from transplant). Solanum lycopersicum. Red Zebra Tomato Seeds. Non-GMO, warm season annual, open-pollinated, heirloom, indeterminate, salad tomato. Suitable for growing in garden plots, raised beds, greenhouses,...
Pepper Seeds - Sweet - Sweet Rain Hybrid
80-89 Days to maturity (from transplant). Capsicum annuum. Sweet Ristra Hybrid Pepper Seeds. Non-GMO, annual, F1 hybrid, sweet pepper with no heat levels. 0 Scoville Heat Units. Suitable for growing...
Sunflower Seeds - Velvet Queen (Organic)
90-110 Days to maturity. Helianthus annuus. Organic Velvet Queen Sunflower Seeds: Non-GMO. Open Pollinated. Organic. Ornamental. Annual. Heirloom. Velvet Queen seeds grow one of the summer's most exclusive and rare...
Lily Bulbs - Asiatic - Red County
2 Bulbs This is a pre-order item and is expected to ship in Early March for spring planting. Other seeds, supplies, or kits ordered with this product may ship separately....
Boysenberry Roots
1 Root This is a pre-order item and is expected to ship in March for spring planting. Other seeds, supplies, or kits ordered with this product may ship separately. This...
Bean Seeds - Pole - Akahana Mame
80-95 Days to maturity. Phaseolus coccineus. Akahana Mame Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, pole, shell, Asian bean. Suitable for growing in garden plots, raised beds, and greenhouses. This "flower...
Lettuce Seeds, Leaf - Red Tango
45 to 55 Days to maturity. Lactuca sativa. Red Tango Leaf Lettuce Seeds. Annual, Heirloom, Open Pollinated, Non-GMO. Red Tango lettuce leaves are red, frilly, serrated, and curled. The lettuce...
Begonia Tubers - Odorata - Red Glory
2 Bulb Bag This is a pre-order item and is expected to ship in late February or March for spring planting. Other seeds, supplies, or kits ordered with this product...
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