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 - Paste - San Marzano Determinate (Organic)
80-90 Days to maturity (from transplant). Solanum lycoperscium. San Marzano Determinate (Organic) Tomato Seeds. Non-GMO, annual, open-pollinated, organic, heirloom, determinate, paste tomato. Suitable for growing in garden plots, raised beds,...
Tomato Seeds - Slicing - Black Krim
75 Days to maturity (from transplant). Solanum lycopersicum. Black Krim Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, heat tolerant, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds, and...
Tobacco Seeds - Cuban Criollo 98
~50-90 Days from transplant to maturity. Nicotiana tabacum. Cuban Criollo 98 Tobacco Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Resistant...
Squash Seeds - Winter - Pink Banana Jumbo
105-115 Days to maturity. Cucurbita maxima Pink Banana Jumbo Winter Squash Seeds. Non-GMO, annual, heirloom, open-pollinated. Suitable for growing in fields, garden plots, raised beds, and large containers. Noted for...
Begonia Seeds - Fibrous - Cocktail Series (Pelleted)
105-112 Days to maturity. Begonia x semperflorens. Cocktail Series Fibrous Begonia Seeds. Non-GMO, hybrid, annual flower. Cocktail Series seeds easily grow classic and tidy begonias bursting with timeless - inch...
Melon Seeds - Cantaloupe - Minnesota Midget
65-70 Days to maturity. Cucumis melo var. reticulatus. Minnesota Midget Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, heat-tolerant Cantaloupe Melon. Suitable for growing in containers, garden plots, raised beds, and...
Mustard Seeds - Mizuna
30 days. This japanese mustard green has dandelion-like jagged edged green leaves with a mild, sweet, earthy flavor. Mizuna grows fast and makes an excellent salad green. It can be...
Lupine Seeds - Russell Strain Mixture
Sturdy, tightly-packed spikes in a wide range of bright colors including bi-color. 1 inch blooms open from top to bottom. Russell Mix Lupine Flowering Plant Seeds Lupines polyphyllus This tall,...
Shiso Herb Seeds (Perilla) - Green
Non-GMO, Heirloom Green Shiso Perilla Herb Garden Seed from True Leaf Market. Perilla frutescens var. crispa. Green Shiso is a warm annual and beefsteak variety. Green Shiso, also known as...
Pumpkin Seeds - Cinderella
95 to 150 days. Cinderella Pumpkin Seeds. Also known as Rouge vif D'Etampes. Kids love this antique french heirloom pumpkin. Flatter than regular pumpkins and darker of color, this is...
Tomato Seeds - Slicing - Brandywine Pink (Organic)
90 Days to maturity (from transplant). Solanum lycopersicum. Organic Brandywine Pink Tomato Seeds. Non-GMO, annual, potato leaf, open-pollinated, heirloom, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds,...
Lettuce Seeds - Romaine - Little Gem (Organic)
Lactuca sativa . (50-55 days) Little Gem lettuce is a tiny single serving size lettuce with rich dark green Organic leaves and a sweet, buttery flavor. Non-astringent flavor makes them...
Bean Seeds - Bush - Slenderette
50-65 Days to maturity. Phaseolus vulgaris. Slenderette Bush Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, high-yielding, bush, snap, green bean. Suitable for growing in containers, garden plots, raised beds, and greenhouses....
Kick Mix - Organic - Sprouting Seeds
4-6 Days. Organic. Non-GMO. High Germination. One of our most celebrated signature mixes ever, the non-GMO Organic Kick Mix is a bright and invigorating seed sprouting blend meant to keep...
Bean Seeds - Bush - Dark Red Kidney (Organic)
90-100 Days to maturity. Phaseolus vulgaris. Organic Dark Red Kidney Bean Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, high-yielding, bush, shelling bean. Suitable for growing in containers, garden plots, raised beds,...
The Organic Wheatgrass Growing Kit
Our flagship wheat grass growing kit. Grow & juice your own wheatgrass for pennies a day. Complete and Organic Kit to get you started growing wheatgrass within 7-10 days. Produces...
Pepper Seeds - Sweet - Hungarian Yellow Wax Sweet
70 Days to maturity (from transplant). Capsicum annuum. Hungarian Yellow Wax Sweet Pepper Seeds. Non-GMO, annual, open-pollinated, heirloom, high-yielding, sweet pepper with mild heat levels. 0 to 500 Scoville Heat...
Grow and Store Garden Seeds 16 Variety
16 varieties of vegetable garden seeds. Specially dried and sealed for long term emergency seed storage. Shelf life up to 10 years. All varieties are stable, open-pollinated, or heirloom, strains...
Pea Seeds - Perfection Dark Seeded
Non-GMO, Heirloom Dark-seeded Perfection Pea Vegetable Garden Seed from True Leaf Market. Pisum sativum. Around 4,000 years ago, garden peas were cultivated in Europe. This heirloom is an early-to- harvest...
Pea - Austrian Field Pea - Cover Crop Seeds
60-70 Days to Termination. Pisum sativum subsp. arvense . Non-GMO. Heirloom. Open-Pollinated. Austrian field pea cover crop seeds are a non-GMO, restorative, low-growing, vining legume known to convert over 120...
Rudbeckia Seeds - Black-Eyed Susan
84-98 days maturity. Rudbeckia hirta. Rudbeckia Black-Eyed Susan Seeds. Non-GMO, Biennial. Ornamental. Black-Eyed Susan seeds grow some of the season's most timeless and familiar blooms of varieties native to the...
Corn Seeds - Sweet - Kandy Korn F1 Hybrid
80-90 Days to maturity. Zea mays. Kandy Korn Hybrid Corn Seeds. Non-GMO, annual, hybrid, Sweet Corn. Suitable for growing in garden plots or raised beds. Corn tolerates heat and drought-prone...
Radish Seeds - White Icicle
Non-GMO White Icicle Radish Seeds, Heirloom. White Icicle Radish has grown in the United States since the late 1800s. Radishes are known for providing high amounts of nutrition. White radishes...
Shiso Seeds (Perilla) - Green Ohba
60 to 70 days to maturity. Perilla frutescens var crispa. Shiso Herb Seeds (Perilla) - Green Ohba Shiso Seeds. Warm season annual. Shiso, also known as perilla or beefsteak leaf,...
Pepper Seeds - Hot - Cayenne Long Red Thin (Organic)
70-79 Days to maturity (from transplant). Capsicum annuum. Cayenne Long Red Thin Organic Pepper Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, deer resistant, heat tolerant, drought tolerant, hot pepper with hot...
Sunflower Seeds - Velvet Queen
90-110 Days to maturity. Helianthus annuus. Velvet Queen Sunflower Seeds: Non-GMO. Open Pollinated. Ornamental. Annual. Heirloom. Velvet Queen seeds grow one of the summer's most exclusive and rare blooms, exceptional...
Pea Seeds - Shelling - Little Marvel
Non-GMO, Heirloom Little Marvel Pea Vegetable Garden Seed from True Leaf Market. Pisum sativum. Little Marvel English Heirloom Pea Seeds came from England during the 1980s as a semi-dwarf shelling...
Parsnip Seeds - All American
All American has a sweet, tender, white and fine grained flesh that makes this a popular parsnip. The thick white roots are uniform, with smooth shoulders. All American reaches 2-3"...
Thyme Seeds - Creeping Thyme
2nd Year maturity. Thymus serpyllum. Creeping Thyme Seeds. Non-GMO, Perennial. Creeping Thyme, also known as "Mother-of-Thyme" is a cold hardy perennial often planted as a trailing ground cover, garden filler,...
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