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]()
Basil Seeds - Italian Large Leaf
60-90 days. Italian Large Leaf basil seeds. Ocimum basilicum. Non-GMO. Open Pollinated. Giant green shiny leaves full of seasonal aroma that just makes your mouth water, Italian Large Leaf is...
Tomato Seeds - Paste - Roma VF
75-80 Days to maturity (from transplant). Solanum lycoperscium. Roma VF Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, determinate, paste tomato. Suitable for growing in garden plots, raised beds, and greenhouses. Resistant...
Tomato Seeds - Cherry - Large Red Cherry
75-80 Days to maturity (from transplant). Solanum lycoperscium. Large Red Cherry Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, indeterminate, cherry tomato. Suitable for growing in garden plots, raised beds, and greenhouses....
Tomato Seeds - Cherry - Supersweet 100 Hybrid
70 Days to maturity (from transplant). Solanum lycoperscium. Supersweet 100 Hybrid Tomato Seeds. Non-GMO, annual, F1 hybrid, indeterminate, cherry tomato. Suitable for growing in garden plots, raised beds, greenhouses, containers,...
Basil Seeds - Italian Large Leaf (Organic)
Organic Italian Large Leaf basil seeds are a staple to any thriving Organic herb garden. A member of the sweet basil varieties, ocimum basilicum is easily the most common basil...
Lemongrass Seeds - West Indian
90-100 days. West Indian Lemongrass Culinary Herb Seeds. Cymbopogon citratus. Non-GMO. Heirloom. West Indian lemongrass seeds grow the edible, tender, and delicious cultivar of lemongrass. Not to be confused with...
Watermelon Seeds - Mini - Sugar Baby
75-80 Days to maturity. Citrullus lanatus. Sugar Baby Watermelon Seeds. Non-GMO, annual, open-pollinated, heirloom, heat tolerant, seeded, mini watermelon. Suitable for growing in garden plots and large containers (minimum 7...
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....
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...
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,...
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....
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...
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...
Tomato Seeds - Slicing - Big Beef Hybrid
73 Days to maturity (from transplant). Solanum lycopersicum. Big Beef Hybrid Tomato Seeds. Non-GMO, annual, F1 hybrid, AAS winner 1994, heat tolerant, drought tolerant, indeterminate, slicing tomato. Suitable for growing...
Tomato Seeds - Cherry - Sweetie
65-70 Days to maturity (from transplant). Solanum lycoperscium. Sweetie Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, indeterminate, cherry tomato. Suitable for growing in garden plots, raised beds, and greenhouses. Widely considered...
Thai Basil Seeds - Siam Queen
Non-GMO, Heirloom Siam Queen Thai Basil Herb Seed from True Leaf Market. Ocimum basilicum. As basil has many different types, Siam Queen Thai Basil is a sweet cultivar that originated...
Anise Seeds
Non-GMO, Open-pollinated, Heirloom Anise Herb Seeds from True Leaf Market®. Pimpinella anisum is native to the Mediterranean and Southeast Asia regions. The Anise herb and seeds, known as Aniseed, have...
Tomato Seeds - Cherry - Chocolate Cherry
70 Days to maturity (from transplant). Solanum lycoperscium. Chocolate Cherry Tomato Seeds. Non-GMO, annual, open-pollinated, indeterminate cherry tomato. Suitable for growing in garden plots, raised beds, greenhouses, and containers. Resistant...
Tomato Seeds - Paste - La Roma IV Hybrid
76 Days to maturity (from transplant). Solanum lycoperscium. La Roma IV Hybrid Tomato Seeds. Non-GMO, annual, F1 hybrid, determinate, paste tomato. Suitable for growing in garden plots, raised beds, and...
Impatiens Seeds - Accent Series
70-77 Days to maturity. Impatiens walleriana. Accent Series Impatiens Seeds. Non-GMO, hybrid, annual. Premium Quality Seeds. Accent Series seeds deliver the country's most popularly grown and undisputed summertime bloom. Impatiens...
Shiso Herb Seeds (Perilla) - Korean
70 days to maturity. Perilla frutescens var. frutescens. Korean Shiso Herb Seeds (Perilla). Warm season annual. Perilla is a lovely Korean herb that is a vivid green on the top...
Basil Seeds - Lemon
Non-GMO, Lemon Basil Herb Seed from True Leaf Market. Ocimum basilicum x citriodorum is native to India. As basil has many different varieties, Lemon Basil Herb is considered non-sweet and...
Tomato Seeds - Slicing - Jet Star Hybrid
72 Days to maturity (from transplant). Solanum lycopersicum. Jet Star Hybrid Tomato Seeds. Non-GMO, warm season annual, F1 hybrid, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds,...
Tomato Seeds - Slicing - Black Krim (Organic)
75 Days to maturity (from transplant). Solanum lycopersicum. Organic Black Krim Tomato Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, heat tolerant, indeterminate, slicing tomato. Suitable for growing in garden plots, raised...
Basil Seeds - Green Leaf Holy Basil
65-75 days maturity. Ocimum sanctum. Green Leaf Holy Basil Seeds. Non-GMO, Heirloom. Annual. Holy basil is an essential herb in the Thai kitchen due to its unique flavor. It is...
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...
Zinnia Seeds - Lilliput Mixture
54-70 Days to maturity. Zinnia elegans. Lilliput Mixture Zinnia Seeds. Non-GMO, organic, annual. Lilliput Mixture Zinnia Flowers are easy to grow from seeds and ideal for hot and drought-prone gardens....
Tomatillo Seeds - Toma Verde
70 days. Physalis ixocarpa. Toma Verde Tomatillo Seeds. Non-GMO, annual, heirloom, open-pollinated. This crop is suitable for containers, garden plots, raised beds, and fields. Early, prolific green tomatillo with flat-round...
Tomato Seeds - Paste - Roma (Organic)
76 Days to maturity (from transplant). Solanum lycoperscium. Roma (Organic) Tomato Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, heat tolerant, determinate, paste tomato. Suitable for growing in garden plots, raised beds,...
Tomato Seeds - Cherry - Yellow Pear (Organic)
78 Days to maturity (from transplant). Solanum lycoperscium. Yellow Pear Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, heat tolerant, indeterminate, cherry tomato. Suitable for growing in garden plots, raised beds, and...
Zinnia Seeds - Dahlia Flowered Mixture
90-100 Days to maturity. Zinnia elegans. Dahlia Flowered Mixture Zinnia Seeds. Non-GMO, organic, annual. Growing Dahlia Flowered Mix zinnia seeds this season is an effortless and vibrant way to dash...
African Marigold Seeds - Cracker Jack
77-84 Days to maturity. Tagetes erecta. Cracker Jack African Marigold Seeds. Non-GMO, annual, open-pollinated. Crackerjack seeds grow a vibrant golden orange and yellow mix of the famous African Marigold that...
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