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]()
Four O Clock Seeds - Marvel of Peru Mix
91-105 Days to maturity. Mirabilis jalapa. Marvel of Peru Seeds. Non-GMO. Open-Pollinated. Ornamental. Annual or Perennial. Marvel of Peru seeds easily grow eye-catching and fragrant four o'clock flowers bursting with...
Tomato Seeds - Slicing - Brandywine Red Regular Leaf
80-100 Days to maturity (from transplant). Solanum lycopersicum. Brandywine Red Tomato Seeds. Non-GMO, annual, regular leaf, open-pollinated, heirloom, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds, and...
Watermelon Seeds - Picnic - All Sweet
90-105 Days to maturity. Citrullus lanatus. All Sweet Watermelon Seeds. Non-GMO, annual, open-pollinated, heirloom, heat tolerant, seeded, picnic watermelon. Suitable for growing in garden plots. Resistant to Anthracnose (1), Fusarium...
Rye - Winter (Organic) - Grass Seeds
This is rye grain (Secale cereale) - not Ryegrass (Lolium). It is not for over-seeding lawns. Grow just like wheatgrass and barleygrass, and discover how rich the flavor of Rye...
Aster Seeds - Powderpuff Mix
91-105 Days to maturity. Callistephus chinensis. Powderpuff Mix Aster Seeds. Non-GMO, Ornamental, Annual. Powderpuff Mix Aster flower seeds are a tidy and vibrant addition to grow in any home or...
Petunia Seeds - Frost Series (Pelleted)
98-105 Days to maturity. Petunia x hybrida. Frost Series Petunia Seeds. Non-GMO, hybrid, Premium Quality Seeds, annual. Frost Series seeds grow a delightful, unique, and lively variation of the world-famous...
Tomato Seeds - Slicing - Giant Red Beefsteak
100 Days to maturity (from transplant). Solanum lycopersicum. Giant Red Beefsteak Tomato Seeds. Non-GMO, warm season annual, open-pollinated, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds, and...
Canna Seeds - Tropical Series
98-112 Days to maturity. Canna x generalis. Tropical Series Canna Seeds. Non-GMO, annual, hybrid flower. Tropical Series seeds promise exotic, early-blooming, and easy-to-grow canna plants for especially hot, humid gardens...
Gourds Seeds - Turks Turban
Non-GMO Turks Turban is ready in 100+ days. Brightly colored ornamental squash has large, flattened fruits measuring 8 to 10 inches across. This gourd is striped with scarlet, white, orange,...
Pumpkin Seeds - Galeaux d'Eysines
100 days. Cucurbita maxima. Galeaux d'Eysines Pumpkin Seeds. Non-GMO, annual, heirloom, open-pollinated winter squash. This crop is suitable for garden plots, raised beds, and pumpkin patches. At first glance, this...
Melon Seeds - Honeydew - Orange Flesh
105 Days to maturity. Cucumis melo. Orange Flesh Honeydew Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, heat-tolerant Honeydew Melon. Suitable for growing in containers, garden plots, raised beds, and greenhouses....
Tomato Seeds - Slicing - Big Rainbow
85-90 Days to maturity (from transplant). Solanum lycopersicum. Big Rainbow Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds, and greenhouses. Resistant...
Sunflower Seeds - Maximilian
90-110 Days to maturity. Helianthus maximiliani. Maximilian Sunflower Seeds: Non-GMO. Open Pollinated. Ornamental. Perennial. Heirloom. Maximilian sunflower seeds grow a playful and unique perennial variation on a classic summertime favorite....
Heliotrope Seeds - Marine
91-98 Days to maturity. Heliotropium arborescens. Heliotrope Marine Seeds. Non-GMO, Annual. Ornamental. Marine heliotrope seeds are fragrant and delicate, yet hardy grow where others would decline. It is easy to...
Sunflower Seeds - ProCut®
50-65 Days to maturity. Helianthus annuus. ProCut F1 Hybrid Sunflower Seeds: Non-GMO. Ornamental. Annual. ProCut sunflower series seeds grow some of summer's most astonishing, vigorous, and timeless blooms. ProCut sunflower...
Sunflower Seeds - Lemon Queen
80-100 Days to maturity. Helianthus annus. Lemon Queen Sunflower Seeds. Non-GMO, open-pollinated, heirloom, annual, multi-branching sunflower. This bright sunflower features light, lemony petals and a light brown center that demands...
Tomatillo Seeds - Cape Gooseberry Large Fruit
90-120 days. Physalis peruviana. Cape Gooseberry Large Fruit Tomatillo Seeds. Non-GMO, warm-season annual, heirloom, open-pollinated. This crop is suitable for garden plots, raised beds, and larger containers. This strain will...
Gourds Seeds - Large & Small Mix
Large and Small Gourd Mix is ready in 90-120 days. This mix of small and large, non-gmo gourd seeds is a collection of gourds that will grow into different shapes...
Burdock Seeds - Chiko
Non-GMO, Heirloom Burdock Chiko Herb Garden Seed from True Leaf Market. Arctium lappa. Burdock biennial herbs originated from regions in Europe and Asia and is a diverse herbal remedy that's...
Melon Seeds - Piel de Sapo
90-110 Days to maturity. Cucumis melo. Piel de Sapo Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, heat tolerant, drought tolerant specialty Melon. Suitable for growing in garden plots and raised...
Rudbeckia Seeds - Cherry Brandy
91-105 days maturity. Rudbeckia hirta. Rudbeckia Cherry Brandy Seeds. Non-GMO, Perennial. Ornamental. Cherry Brandy seeds grow one of the summer's most vibrant and exclusive rudbeckias, compact and tidy 18-24 inch...
Dianthus Seeds - Floral Lace Series (Pelleted)
105-112 days to maturity. Dianthus chinensis x barbatus. Dianthus Floral Lace Series Mix Seeds. Non-GMO, Annual, or Biennial. Ornamental. Floral Lace Series dianthus seeds promise a unique, vibrant, and low-maintenance...
Pumpkin Seeds - Harvest Jack F1
Cucurbita pepo (105 days) 22-28 lb, Dark orange skin and four inch long handles make handling easy. Exceptional yield potential under most growing conditions. Pumpkin Seeds - Harvest Jack F1...
Seed Potatoes - Spring - Russet (Organic)
This item is a pre-order item and is expected to ship in March for spring planting. Other seeds, supplies, or kits ordered with this product may ship separately. This product...
Salsify Seeds - Sandwich Island
Sandwich Island Salsify is a root vegetable that you won't find in the grocery store. Also referred to as an oyster plant, it is a plant that tastes like an...
Fennel Seeds - Bronze
Non-GMO, Heirloom Bronze Fennel Herb Garden Seed from True Leaf Market. Foeniculum vulgare purpureum. Bronze Fennel is a cool perennial that's been used as medicine dating back to Ancient Egypt....
Pumpkin Seeds - Baby Bear
Non-GMO Baby Bear Pumpkin is an AAS Winner who is ready in 105 days. Pumpkin vines produce bright orange fruits that measure 5 to 6 inches across and weigh 1...
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