Warm Winter / Frost-Free Areas
Zones: 9b–12
March can be peak garden season in these warm-winter zones. It is also a "pivot" month for gardening in much of the warmer parts of these zones. The risk of frost is over. Cool-season crops are in and doing well. March & April are the times to start transitioning from cool-season greens to heat-loving summer crops.
Indoors (fresh harvests):
- Microgreens: peas, broccoli, sunflowers, arugula.
- Sprouts: alfalfa, broccoli, radish, mung
- Herbs & greens under lights: chives, parsley, mint
Transplants to move outdoors (weather permitting - harden first): pepper, tomato, eggplant, melons, basil
Crops that can be directly sown outdoors in March: cucumber, squash, beans, corn, melons, okra, plus replanting for many greens and root crops
Cover crops: buckwheat, cow peas, sorghum
Tip: A SoCal zone 10 can be different from a Florida zone 10. Consider checking with your state Extension Service office for more specific recommendations and guidelines.
Use your USDA zone as a guide. Microclimates matter—coastal/urban spots run warmer; high elevation runs colder.
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![Legend: H for Heirloom, O for Organic, A for AAS Winner, F for staff favorites]()
Pepper Seeds - Sweet - Muscato Hybrid
70-79 Days to maturity (from transplant). Capsicum annuum. Muscato Hybrid Pepper Seeds. Non-GMO, annual, F1 hybrid, sweet pepper with no heat levels. 0 Scoville Heat Units. Suitable for growing in...
Radish Seeds - Early Scarlet Globe
20-28 Days to maturity. Raphanus sativus. Early Scarlet Globe Radish Seeds. Non-GMO, annual, open-pollinated, heirloom, spring radish. This is an early to mature high-yielding variety known for its bright red...
Mustard Seeds - Senposai Komatsuna Hybrid
30-40 to maturity. Brassica rapa var. perviridis. Senposai Komatsuna Mustard Seeds. Non-GMO, warm or cold-season, annual, hybrid. This popular traditional Japanese komatsuna hybrid has glossy, thick dark green leaves and...
Melon Seeds - Ananas
90-110 Days to maturity. Cucumis melo. Ananas Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, heat-tolerant Melon. Suitable for growing in garden plots, raised beds, and greenhouses. Originating from France, these...
Tomato Seeds - Slicing - Brandymaster Red Hybrid
80 Days to maturity (from transplant). Solanum lycopersicum. Brandymaster Red Hybrid Tomato Seeds. Non-GMO, annual, F1 hybrid, indeterminate, potato leaf, slicing tomato. Suitable for growing in garden plots, raised beds,...
Tomato Seeds - Slicing - Long Keeper
78 Days to maturity (from transplant). Solanum lycoperscium. Long Keeper Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, determinate, slicing tomato. Suitable for growing in garden plots, raised beds, and greenhouses. Resistant...
Iberis (Candytuft) Seeds - Empress
70-77 days to maturity. Iberis amara. Iberis Empress Seeds. Non-GMO, Annual. Empress Candytuft seeds are an elegant, timeless addition to any garden. Empress iberis seeds grow to highlight and accent...
Squash Seeds - Winter - Hubbard Chicago Warted
Hubbard Chicago Warted Winter Squash Seeds. 110 Days to Harvest. Non-GMO Heirloom, Open Pollinated, Annual Seeds. Cucurbita maxima. AKA Green Warted Hubbard Squash. Hubbard Chicago Winter Squash is a very...
Watermelon Seeds - Icebox - Bush Sugar Baby (Organic)
75 Days to maturity. Citrullus lanatus. Bush Sugar Baby Watermelon Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, heat tolerant, seeded, Icebox watermelon. Suitable for growing in garden plots and large containers...
Tomato Seeds - Slicing - Persimmon
80 Days to maturity (from transplant). Solanum lycopersicum. Persimmon Tomato Seeds. Non-GMO, warm season annual, open-pollinated, heirloom, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds, greenhouses. Persimmon...
Cucumber Seeds - Green Dragon Burpless F1
70 Days to maturity. Cucumis sativus. Green Dragon Burpless Hybrid Cucumber Seeds. Non-GMO, annual, F1 hybrid, monoecious, burpless, slicing cucumber. Suitable for growing in fields, containers (with support), garden plots,...
Cauliflower Seeds - Purple of Sicily
70-90 Days to maturity. Brassica oleracea. Purple of Sicily Cauliflower Vegetable Seeds. Non-GMO, annual, open-pollinated, heirloom cauliflower. Purple of Sicily is a standout heirloom cauliflower variety that traces its origins...
Bean Seeds - Bush - Landreth Stringless
50-60 Days to maturity. Phaseolus vulgaris. Landreth Stringless Bush Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, heavy yielding, drought tolerant, bush, snap, green beans. Suitable for growing in containers, garden plots,...
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...
Carrot Seeds - Amsterdam
Amsterdam Carrot Seeds. AKA: Amsterdam Forcing 2. 50 to 70 days. Non-GMO, Heirloom (Open Pollinated). Daucus carota. A Nantes-style carrot, the Amsterdam is a European heirloom cultivated for generations for...
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...
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,...
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...
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...
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...
Lettuce Seeds - Okayama Salad
50-60 days to maturity. Lactuca sativa ‘Okayama Salad’. Okayama Salad Lettuce Seeds. Non-GMO, cool-season annual heirloom. This early-maturing butterhead lettuce is a Japanese variety known for its delicate flavor and...
Tomato Seeds - Cherry - Gardener's Delight (Organic)
50-80 Days to maturity (from transplant). Solanum lycoperscium. Organic Gardeners Delight Tomato Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, indeterminate, cherry tomato. Suitable for growing in garden plots, raised beds, and...
Watermelon Seeds - Picnic - Dixie Queen (Organic)
80 Days to maturity. Citrullus lanatus. Dixie Queen Organic Watermelon Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, heat tolerant, seeded, picnic watermelon. The Organic Dixie Queen watermelon is popular in the...
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...
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