March is the month when most gardens really wake up. In colder regions, it is prime time for indoor seed starting and preparing beds. In milder climates, spring planting is already rolling, and in the warmest zones, the garden may be producing heavily while you begin shifting toward heat-loving crops.
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 settles.
Zones 7b-9a: These zones experience mild winter weather and are warming quickly in March. Many cool-season crops can be direct sown outdoors, and succession planting helps keep harvests coming as temperatures rise. It is also a great time to start warm-season favorites indoors while keeping frost protection on hand for unexpected cold snaps. And of course, sprouts and microgreens are always in season indoors!
Zones 9b-12: Depending on your area, March can be peak garden season in these warm-winter zones. Many crops planted earlier are now producing, and this month often marks the transition from late cool-season planting to the start of warm-season gardening. In the hottest areas, you may begin planting heat lovers while timing your last rounds of tender cool-season crops before warmer weather arrives.
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![Legend: H for Heirloom, O for Organic, A for AAS Winner, F for staff favorites]()
Tomato Seeds - Slicing - Big Beef Hybrid
73 Days to maturity (from transplant). Solanum lycopersicum. Big Beef Hybrid Tomato Seeds. Non-GMO, annual, F1 hybrid, AAS winner 1994, heat tolerant, drought tolerant, indeterminate, slicing tomato. Suitable for growing...
Onion Seeds - Intermediate - Candy Hybrid
85 Days to maturity. Allium cepa ‘Candy’. Candy Onion Seeds. Non-GMO, annual, hybrid, bulbing, intermediate-day onion. Suitable for growing in greenhouses, garden plots, and raised beds. Resistant to Pink Root...
Pea Seeds - Shelling - Green Arrow (Organic)
65-75 Days to maturity. Pisum sativum. Organic Green Arrow Pea Seeds. Non-GMO, annual, open-pollinated, heirloom, treated pea seeds. Long, slim, 4.5-inch pods grow in pairs on strong 28-inch vines. Suitable...
Lettuce Seeds - Summer Bibb
Lactuca sativa (43 days) Summer bibb is a fabulous tasting lettuce that is crisp, clean and easy to grow. This lettuce has ornamental light green leaves that are dotted with...
Beet Seeds - Ruby Queen
52 days. The Ruby Queen beet is a variety that does very well in poor soils. It produces uniform, round globes and short tops. The leaves grow to be green...
Beet Seeds - Early Wonder Tall Top
35-60 days. The Early Wonder Tall Top is an easy to grow beet that can be harvested as early as thirty five days after planting, and thrives in colder weather....
Carrot Seeds - Imperator 58
65-80 days. The Imperator 58 carrot is a colorful and crunchy addition to any home garden. Seeds produce nine inch long tapered roots with a bright orange color. Their tops...
Tomato Seeds - Cherry - Sweetie
65-70 Days to maturity (from transplant). Solanum lycoperscium. Sweetie Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, indeterminate, cherry tomato. Suitable for growing in garden plots, raised beds, and greenhouses. Widely considered...
Cucumber Seeds - Marketmore 76 (Organic)
67 days. The Marketmore 76 cucumber is a variety of cucumber that is sweet and tender. The Marketmore 76 is dark green and smooth, and grows to be between eight...
Corn Seeds - Sweet - (su) Early Sunglow Hybrid
62 Days to maturity. Zea mays. Early Sunglow Hybrid Corn Seeds. Non-GMO, annual, hybrid, Sweet Corn. Suitable for growing in garden plots or raised beds. Corn tolerates heat and drought-prone...
Alfalfa - Cover Crop Seeds
60-70 Days. Medicago sativa. Annual. Non-GMO. Cover Crop. Also known as "lucerne", non-GMO alfalfa is a year-round cover crop, widely grown for its nitrogen-replenishing benefits and fertile, all-natural springtime "green...
Cabbage Seeds - Mammoth Red Rock
90 days. The Mammoth Red Rock cabbage has a beautiful reddish-purple tone to its heads, which have a subtle, delicate, and sweet flavor. It is a hardy crop, and grows...
Cucumber Seeds - Homemade Pickles (Organic)
55 Days to maturity. Cucumis sativus. Organic Homemade Pickles Cucumber Seeds. Non-GMO, annual, organic, open-pollinated, heirloom. Suitable for growing in fields, containers (with support), garden plots, raised beds, and greenhouses...
Onion Seeds - Short - Red Burgundy
100 Days to maturity. Allium cepa. Red Burgundy Onion Seeds. Non-GMO, annual, open-pollinated, heirloom, cold tolerant, bulbing, short-day onion. Suitable for growing in greenhouses, garden plots, raised beds, and containers....
Lettuce Seeds - Leaf - Red Sails
Red Sails Leaf Lettuce is ready in 45 days. An AAS winner, these non-GMO Red Sails seeds grow into green leaves of lettuce with red tips that are ready to...
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...
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...
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...
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....
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,...
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...
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...
Cabbage Seeds - Red Acre (Organic)
90-110 days. Organic Red Acre Cabbage Seeds. Brassica oleracea var. capitata. Non-GMO. Heirloom. Nearly a century old and still one of the most reliable performers in the garden, Red Acre...
Pak Choi Seeds - White Stem - Organic
40 Days to maturity. Brassica rapa var. chinensis (33 days) Organic White Stem Pak Choi Seeds. Who can resist Baby Pak Choy! This is White Stem or 'Baby Bok Choy',...
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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