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]()
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...
Wildflower Seeds - Hummingbird and Butterfly
Grow a beautiful, colorful wildflower garden with our National Hummingbird & Butterfly Seed Collection. This wildflower blend grows a season-long charm that lives up to its name attracting hummingbirds, butterflies,...
Thyme Seeds - French
Non-GMO, Heirloom, Open Pollinated French Thyme Herb Garden Seed from True Leaf Market. Thymus vulgaris. French Thyme is a cold hardy perennial with gray-green leaves and bold floral and earthy...
Beet Seeds - Chioggia
55 Days. Beta vulgaris. Annual. Open-pollinated. Pronounced "key-oh-jah" after the small Venetian villa town, non-GMO Chioggia beet seeds are a classic Italian garden heirloom grown and sold throughout the Mediterranean...
Cucumber Seeds - Tendergreen Burpless (Organic)
65 Days to maturity. Cucumis sativus. Organic Tendergreen Burpless Cucumber Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, monoecious, burpless, slicing cucumber. Suitable for growing in fields, containers (with support), garden plots,...
Melon Seeds - Cantaloupe - Imperial 45
65-85 Days to maturity. Cucumis melo. Imperial 45 Cantaloupe Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, AAS winner, heat-tolerant Cantaloupe Melon. Suitable for growing in garden plots, raised beds, and...
Cucumber Seeds - Muncher Burpless - Organic
65-70 days. Muncher Cucumber Seeds Organic. Cucumis sativus. Non-GMO. Heirloom. One of the most reliably productive and tolerant grows on the farm or in the home garden, Muncher cucumber has...
Lettuce Seeds - Romaine - Giant Caesar
Giant Caesar Lettuce Seeds. 70 days to maturity. Lactuca sativa. Heirloom, Annual. The Giant Caesar Lettuce is an amazing bright green loose-leaf romaine type that has a buttery sweet flavor...
Cabbage Seeds - Late Flat Dutch
100 days. The Late Flat Dutch cabbage produces large, pale green heads. It is a hardy garden crop that can be grown in climate zones one through ten. After around...
Cucumber Seeds - Homemade Pickles
Non-GMO, open-pollinated Homemade Pickles Cucumber Seeds from True Leaf Market yield a pickling-variety of cucumber with small white spines and crunchy cores. Growing on up to 5' disease-resistant vines, the...
Lettuce Seeds - Romaine - Freckles
50-70 days. These non-GMO Freckles lettuce seeds grow into green leaves of lettuce with red spots that are ready to harvest in 50 to 70 days. The Freckles thrives in...
Melon Seeds - Cantaloupe - Hearts of Gold
80-90 Days to maturity. Cucumis melo. 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 greenhouses....
Cabbage Seeds - Savoy Perfection
90 days. The Savoy Perfection cabbage is a unique variety that doesn't produce the sulfur-like smell that other varieties of cabbage do when they are cooked. It is a hardy...
Cucumber Seeds - Sweet Success Hybrid
60 days. The Sweet Success Hybrid cucumber is a large variety of cucumber that is sweet and tender. The Sweet Success Hybrid is dark green and smooth, and grows to...
Lettuce Seeds - Leaf - Oakleaf
Non-GMO Oakleaf lettuce is ready 55-65 days. Utah State University recommends this lettuce strain. The Oakleaf can tolerate colder temperatures. The leaves of the Oakleaf have a mildly sweet flavor,...
Lettuce Seeds - Leaf - Salad Bowl Green
45-50 days. An AAS winner, these non-GMO Salad Bowl Green seeds grow into green leaves of lettuce that are ready to harvest in 45 to 50 days. The Salad Bowl...
Cabbage Seeds - Early Round Dutch
Brassica oleracea (75 days) Also called "Round Dutch Cabbage" Early round Dutch has solid uniform, oval heads that weigh 2-5 lbs. Small, short-stemmed, short core, good wrapper leaves and slow...
Tomato Seeds - Cherry - Gold Nugget
60 Days to maturity (from transplant). Solanum lycoperscium. Gold Nugget Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, determinate, cherry tomato. Suitable for growing in garden plots, raised beds, and greenhouses. Resistant...
Lettuce Seeds - Leaf - Grand Rapids
50-60 days. These non-GMO Grand Rapids lettuce seeds grow into large green leaves that are resistant to tip burn. Grand Rapids Lettuce is ready to harvest in 55 days. The...
Lettuce Seeds - Super Red Romaine
Lactuca sativa (40 days) Super Red Romaine Lettuce has long crunchy spoon shaped leaves that start green and turn to an intense red. Very intense colored romaine that is highly...
Mixed Greens Seeds - Mesclun Mix - Organic
A succulent blend of gourmet greens that will satisfy your pallet and is extremely healthy. This mesclun blend is the type normally served in fine restaurants, but you can grow...
Corn Seeds - Flour - Painted Mountain (Organic)
90 Days to maturity. Zea mays. Painted Mountain Organic Corn Seeds. Non-GMO, warm season annual, certified organic, open-pollinated, heirloom, Flour Corn. Suitable for growing in garden plots or raised beds....
Onion Seeds - Long - White Sweet Spanish
120 Days to maturity. Allium cepa. White Sweet Spanish Onion Seeds. Non-GMO, annual, open-pollinated, heirloom, cold tolerant, bulbing, long-day onion. Suitable for growing in greenhouses, garden plots, raised beds, and...
Cabbage Seeds - Golden Acre (Organic)
65 Days to maturity. Brassica oleracea var. capitata. Organic Golden Acre Cabbage Seeds. Non-GMO, annual, organic, open-pollinated, heirloom cabbage seeds. Suitable for growing in fields, containers, garden plots, raised beds,...
Onion Seeds - Short - Red Grano
112 Days to maturity. Allium cepa. Red Grano 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....
Beet Seeds - Golden - Organic
(58 days) aka Golden Detroit Golden beet made its debut in 1970. If you are annoyed with those pesky red beets "bleeding" all over your counters, then this is the...
Cucumber Seeds - Pickling - Bush Pickle
50 Days to maturity. Cucumis sativus. Bush Pickle Cucumber Seeds. Non-GMO, annual, open-pollinated, heirloom, monoecious, pickling cucumber. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses (with...
Cucumber Seeds - Tokiwa
55-75 Days to maturity. Cucumis sativus var. tokiwa. Tokiwa Cucumber Seeds. Warm-season annual heirloom. Non-GMO. This uniform, dark green variety grows 1.5" in diameter and 9-10" long. Although the fruit...
Cucumber Seeds, Japanese - Progress - Hybrid
50-60 Days to Maturity.Cucumis sativus Progress Japanese Cucumber Seeds F1. Hybrid. Non-GMO. Annual. Non-GMO. This Japanese cucumber has glossy, green, smooth skin and is crisp and very tasty. This is...
Onion Seeds - Long - Ruby
100 Days to maturity. Allium cepa. Ruby Onion Seeds. Non-GMO, annual, open-pollinated, heirloom, cold tolerant, bulbing, long-day onion. Suitable for growing in greenhouses, garden plots, raised beds, and containers. Ruby...
Carrot Seeds - Black Nebula
Daucus carota This highly attractive open pollinated carrot variety was bred especially for the home gardener. The dark purple roots can be eaten fresh, roasted, steamed or used for dye....
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