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 - Salad - Better Boy Plus Hybrid
70 Days to maturity (from transplant). Solanum lycoperscium. Better Boy Tomato Seeds. Non-GMO, annual, hybrid, heat tolerant, indeterminate, salad tomato. Suitable for growing in garden plots, raised beds, and greenhouses....
Squash Seeds - Winter - Vegetable Spaghetti
80-100 days. Vegetable Spaghetti Winter Squash Seeds. Cucurbita pepo. Non-GMO. Open Pollinated. Grow your own pasta replacement with Vegetable Spaghetti Winter squash seeds. This spaghetti squash is ready in just...
Nasturtium Seeds - Jewel Mix
54-63 Days to maturity. Tropaeolum majus. Organic Nasturtium Jewel Mix Seeds. Non-GMO, annual, heirloom. Jewel Mix nasturtium is brilliant, easy to grow from seed, and perfectly suited for many dry...
Tomato Seeds - Paste - San Marzano Indeterminate
85 Days to maturity (from transplant). Solanum lycoperscium. San Marzano (Indeterminate) Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, indeterminate, paste tomato. Often compared to the famous Roma tomato in terms of...
Tomato Seeds - Salad - Celebrity Plus Hybrid
72 Days to maturity (from transplant). Solanum lycoperscium. Celebrity Plus Hybrid Tomato Seeds. Non-GMO, annual, hybrid, AAS winner, semi-determinate, salad tomato. Suitable for growing in garden plots, raised beds, and...
Melon Seeds - Cantaloupe - Hales Best Jumbo (Organic)
85-110 Days to maturity. Cucumis melo. Hale's Best Jumbo Cantaloupe Melon Seeds. A non-GMO, annual, heirloom, open-pollinated, organic, heat-tolerant, drought-tolerant Cantaloupe Melon. Suitable for growing in garden plots, raised beds,...
Chamomile Seeds - German
Non-GMO, Heirloom German Chamomile Herb Garden Seed from True Leaf Market. Matricaria chamomilla. German Chamomile plants originated in Western Asia and were later cultivated in Europe, where chamomile has been...
Bean Seeds - Bush - Contender
50-65 Days to maturity. Phaseolus vulgaris. Contender Bush Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, high yielding, heat tolerant, bush, snap, stringless bean. Suitable for growing in containers, garden plots, raised...
Borage Herb Seeds
60-70 Days. Borage Culinary Herb Seeds. Borago officinalis. Non-GMO. Heirloom. Borage seeds are grown as both an indoor culinary herb and an open-pollinated garden herb. Non-GMO Borage seeds produce some...
Cucumber Seeds - Straight Eight
55-60 days. Straight Eight Cucumber Seeds. Cucumis sativus. Non-GMO. Heirloom. Nearly a century-old American heirloom, the Straight Eight is an award-winning slicing cucumber known for its uniformly straight 8 inch...
Zinnia Seeds - California Giant Mix
75-90 Days to maturity. Zinnia elegans. California Giant Mixture Zinnia Seeds. Non-GMO, organic, annual. The “king of summer annuals" California Giant Mix seeds are the largest variety of Zinnias ever,...
Common Thyme Seeds (Organic)
Certified Organic. Non-GMO. Perennial. 85 days. Non-GMO, Heirloom Organic Common Thyme Herb Garden Seed from True Leaf Market. Genus Thymus. Common Thyme is a cold hardy perennial that grows as...
Tomato Seeds - Salad - Early Girl Hybrid
60 Days to maturity (from transplant). Solanum lycoperscium. Early Girl Hybrid Tomato Seeds. Non-GMO, annual, hybrid, heat tolerant, drought tolerant, indeterminate, salad. Suitable for growing in garden plots, raised beds,...
Petunia Seeds - Easy Wave Series (pelleted)
98-105 Days to maturity. Petunia x hybrida. Easy Wave Series Petunia Seeds. Non-GMO, hybrid, Premium Quality Seeds, annual. Easy Wave Series petunia seeds grow one of summer's most famous and...
Basil Seeds - Genovese
60-90 days. Genovese basil seeds. Ocimum basilicum. Non-GMO. Open Pollinated. Genovese is a sweet basil heirloom native to the Italian provinces of Genoa, Savona, and Imperia; while locals are decided...
Cucumber Seeds - Tendergreen Burpless
65 Days to maturity. Cucumis sativus. Tendergreen Burpless Cucumber Seeds. Non-GMO, annual, open-pollinated, heirloom, monoecious, burpless, slicing cucumber. Suitable for growing in fields, containers (with support), garden plots, raised beds,...
Sunflower Seeds - Mammoth Grey Stripe
90-110 Days to maturity. Helianthus annuus. Mammoth Grey Stripe Sunflower Seeds: Non-GMO. Open Pollinated. Ornamental. Annual. Mammoth sunflower seeds grow one of the tallest, brightest, and most breathtaking flowers in...
Bean Seeds - Pole - Kentucky Blue
50-75 Days to maturity. Phaseolus vulgaris. Kentucky Blue Bean Seeds. Non-GMO, annual, open-pollinated, high-yielding, AAS Winner, drought and heat tolerant, high-yielding, pole, snap string bean. Suitable for growing in containers,...
Sage Seeds - Broad Leaved
Salvia officinalis Perennial. 75 days. Non-GMO, Heirloom, Open Pollinated Broad Leaved Sage Herb Garden Seed from True Leaf Market. Salvia officinalis. Sage plants are warm perennials native to the Meditteranean....
Begonia Seeds - Tuberous - Nonstop Series (Pelleted)
119-133 Days to maturity. Begonia x tuberhybrida. Nonstop Series Tuberous Begonia Seeds. Non-GMO, hybrid, perennial, pelleted. Nonstop Series pelleted seeds promise exotic, easygoing 2-3-inch, mostly double blooms for hot, humid...
Cucumber Seeds - Muncher
65-70 days. Muncher Cucumber Seeds. 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 become...
Corn Seeds - Sweet - Ambrosia Hybrid
80-90 Days to maturity. Zea mays. Ambrosia Hybrid Corn Seeds. Non-GMO, annual, hybrid, Sweet Corn. Suitable for growing in garden plots or raised beds. Corn tolerates heat and drought-prone regions....
Sage Seeds - Broad Leaved (Organic)
Salvia officinalis. Certified Organic. Perennial. 75 days. Non-GMO, Heirloom, Open Pollinated Organic Broad Leaved Sage Herb Garden Seed from True Leaf Market. Salvia officinalis. Sage plants are warm evergreens that...
Bean Seeds - Bush - BeSweet Edamame Soybean
75-105 Days to maturity. Glycine max. BeSweet Edamame Bean Seeds. Non-GMO, annual, open-pollinated, bush, shell, soybean, high-yielding, Asian bean. Suitable for growing in containers, garden plots, raised beds, and greenhouses....
Squash Seeds - Winter - Waltham Butternut (Organic)
110 days to maturity. Cucurbita moschata. Organic Waltham Butternut Winter Squash Seeds. Non-GMO, annual, heirloom, open-pollinated, AAS winner. Suitable for growing in fields, garden plots, raised beds, and containers. The...
Thyme Seeds - Common
2nd year maturity. Common Thyme Culinary Herb Seeds. Thymus vulgaris. Non-GMO. Popularly known as English thyme to differentiate between the many varieties, Common thyme seeds are one of the hardiest,...
Squash Seeds - Winter - Vegetable Spaghetti (Organic)
80-100 days. Organic Vegetable Spaghetti Winter Squash Seeds. Cucurbita pepo. Non-GMO. Open Pollinated. Grow your own pasta replacement with Organic Vegetable Spaghetti Winter squash seeds. This spaghetti squash is ready...
Echinacea - Purple Coneflower Seeds
2nd Year maturity. Echinacea purpurea. Purple Coneflower Seeds. Non-GMO, Heirloom, Perennial. Echinacea grows as a warm-season perennial and flowering herb native to Eastern North America. These wildflowers are popular, as...
Catnip Seeds
Up to 85 days. Foliage is greenish-gray with small blue flowers. Dried leaves can be used for tea and as a stimulant for cats. Small bilabiate blooms can be white,...
Tomato Seeds - Slicing - Cherokee Purple
80-90 Days to maturity (from transplant). Solanum lycopersicum. Cherokee Purple Tomato Seeds. Non-GMO, warm-season annual, open-pollinated, heirloom, heat-tolerant, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds, greenhouses....
Cucumber Seeds - Diva Hybrid
58 days. The Diva Hybrid cucumber is an early variety of cucumber that is sweet and tender. The Diva Hybrid is dark and semi glossy, and grows to be between...
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