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]()
Spinach Seeds - Giant Noble
Non-GMO. Heirloom. Giant Noble Spinach Vegetable Garden Seed. Spinacia oleracea. The smooth and rich-green leaves of these spinach plants help provide this heirloom's name" as Giant Noble Spinach leaves grow...
Spinach Seeds - Bloomsdale Long Standing (Organic)
35-50 days. Organic Bloomsdale Long Standing Spinach Seeds. Spinacia oleracea. Non-GMO. Heirloom. Organic Bloomsdale Long Standing Spinach provides bright flavor with tender leaves, as this annual is a popular variety...
Arugula Seeds - Slow Bolt (Organic)
40-45 days. Organic Slow Bolt Arugula herb Seeds. Eruca vesicaria sativa. Non-GMO. Organic Slow Bolt arugula seeds are one of the fastest growing crops for home gardeners and, since they...
Spinach Seeds - Bloomsdale Long Standing
35-50 days. Bloomsdale Long Standing Spinach Seeds. Spinacia oleracea. Non-GMO. Open Pollinated. Bloomsdale Spinach seeds came from Philadelphia in the late 19th century by D. Landreth & Sons Seed Company....
Arugula Seeds - Slow Bolt
40-45 days. Eruca vesicaria sativa. Non-GMO. Herb. Annual. Non-GMO Slow Bolt arugula seeds are one of the fastest-growing crops available to home gardeners and, since they are slower to bolt,...
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...
No-Till Forage Friendly Cover Crop Mix
30-60 Days to termination. No-Till Forage Friendly Cover Crop Seeds. Non-GMO, annual, winter-killing, no-till, and forage-friendly. This mix has been created as a forage-safe option for home gardens, small farms,...
Pak Choi Seeds - Shanghai
Cabbage Seeds - Pak Choi - Shanghai. Heirloom, Non-GMO. Annual. Brassica rapa Chinensis group. 10-15 days microgreens; 20-30 days baby leaf; 45 days full maturity. Cool-season. This green stem variety...
Arugula Seeds - Astro
40-60 days to maturity. Eruca sativa. Astro Arugula Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Slightly lobed, medium green leaves...
Spinach Seeds - America
America Spinach Seeds. 43 to 55 Days. Non-GMO, Open Pollinated, Heirloom. Spinacia oleracea. AKA: American, America Long Standing. The America Spinach variety is tolerant of heat and drought and is...
Hairy Vetch - Cover Crop Seeds
80-90 Days. Vicia villosa. Annual. Heirloom. Non-GMO. Such a vigorous annual cover crop that it is considered invasive in much of the United States, non-GMO hairy vetch is a European...
Spinach Seeds - Viroflay
Non-GMO, Heirloom Viroflay Spinach Vegetable Garden Seed from True Leaf Market. Spinacia oleracea. Viroflay Spinach Seeds originate from France around the 17th century and have been cultivated in Paris. The...
Mustard Seeds - Osaka Purple
21 to 45 days. An outstanding mustard of dark green-purple leaves with bright white veins. Harvest at 4 to 6 inches for salad or allow it to grow to full...
Turnip Seeds - Seven Top
45-65 days. Brassica rapa. Seven Top Turnip seeds grow into cool season root vegetables that are biennials, fast growing and referred to as "turnip greens." These heirloom seeds come from...
Chrysanthemum Greens Seeds - Oasis
40-50 Days to maturity. Glebionis coronaria var. oasis. Oasis Chrysanthemum Greens Seeds. Cool-season annual heirloom. Non-GMO. Oasis has small, deeply serrated, dark-green aromatic leaves that are more productive, vigorous, and...
Spinach Seeds - Lakeside - Hybrid
Spinach Seeds - Lakeside - Hybrid. Non-GMO. Spinacea oleracea. 25-30 days maturity for baby leaf, 40-60 days to full maturity. Cool season annual. Lakeside has uniform thick dark green smooth...
Mustard Seeds - Mizuna Red Streaks
45 days. 20 days for baby leaf. With a mild peppery mustard flavor, this green is great for salads as a baby green or a full-size green. The stalk has...
Pak Choi Seeds - Rosette Tatsoi
40 to 50 Days to maturity. Brassica rapa narinosa. Rosette Tatsoi Chinese Cabbage (Pak Choi) Seeds. Non-GMO, Open Pollinated, Heirloom, Annual. This specialty pak choi is quite cold-tolerant, even being...
Hairy Vetch - Organic - Cover Crop Seeds
80-90 Days. Vicia villosa. Organic. Annual. Non-GMO. Such a vigorous annual cover crop that it is considered invasive in much of the United States, non-GMO hairy vetch is a European...
Radish Seeds - Crimson Giant
Raphanus sativus (29 to 40 days) Sometimes called Crimson "Giant Globe Radish" or "Giant Butter Radish". Crimson Giant Radish seeds grow large 1 1/2 - 2" globe shaped crimson red...
Spinach Seeds - Matador Viking
45 days. Spinacia oleracea. Matador Viking Spinach Seeds. Non-GMO, annual, heirloom, open-pollinated. This crop is suitable for containers, garden plots, raised beds, and fields. 1933 heirloom with smooth, dark green...
Mustard Seeds - Red Garnet
40 Days to maturity. Brassica juncea. Red Garnet Mustard Seeds. Non-GMO, Annual. Red Garnet Mustard is much like its related Japanese Red Giant and Japanese Giant Garnet cousins displaying a...
Broccoli Seeds - Chinese Broccoli - Early Jade - Hybrid
40-50 days to maturity. Brassica oleracea var alboglabra ‘Early Jade’. Early Jade Chinese Broccoli Seeds. Non-GMO, Hybrid, Cool-season Annual. Closely related to European cabbage, Chinese Broccoli was introduced to China...
Spinach Seeds - Seaside - Hybrid
Spinach Seeds - Seaside - Hybrid. Non-GMO. Spinacea oleracea. 25-30 days maturity for baby leaf, 40-60 days to full maturity. Cool season annual. Seaside is a very uniform baby leaf...
Italian Dandelion Seeds
Non-GMO, Heirloom Italian (Chicory) Dandelion Herb Garden Seed from True Leaf Market. Cichorium intybus. This is a tender perennial that originates from Italy and isa type of chicory or endive....
Turnip Seeds - White Egg
Brassica rapa (45-55 days) AKA "Early White Egg" or "Snowball". White egg turnip is a long time favorite in the South where it is know for its reliability and fine...
Lettuce Seeds - Heatwave Mix - Organic
The Heatwave Lettuce Mix lettuces that thrive in the heat and remain productive. Our choice" slow-bolt" varieties such as Great Lakes, Iya Sol, and Oakleaf Royal. These lettuce types texture...
Corn Salad Seeds - French
40 days. Valerianella olitoria. French Corn Salad Seeds. Non-GMO, annual, open-pollinated. This crop is suitable for garden plots, raised beds, and containers. French corn salad, also known as mache or...
Spinach Seeds - Carmel Hybrid
40 days. Spinacia oleracea. Carmel Hybrid Spinach Seeds. Non-GMO, annual, F1 hybrid. This crop is suitable for garden plots, raised beds, and containers. Carmel is a fast-growing, very uniform hybrid...
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