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]()
Squash Seeds - Summer - Fordhook Zucchini (Organic)
50 to 60 days to maturity. Cucurbita pepo. Organic Fordhook Zucchini Summer Squash Seeds. Non-GMO, annual, heirloom, open-pollinated, organic. This is suitable for fields, garden plots, raised beds, and containers....
Tobacco Seeds - Piloto Cubano
~65 Days from transplant to maturity. Nicotiana tabacum. Piloto Cubano Tobacco Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Resistant to...
Lentil Seeds - Green - Organic
Organic Green Lentil Seeds. Lens culinaris. 80 to 110 days to maturity. Certified Organic by OTCO. Hardy Annual. Heirloom, Open Pollinated, Non-GMO. Produces light green, or greenish-brown lentils. Sometimes referred...
Sesame Seeds - White Shirogoma
85 days to maturity. Sesame indicum. White Shirogoma Sesame Seeds. Non-GMO, open pollinated, perennial. White Shirogoma Sesame Seeds. Annual. You’ve probably seen sesame seeds before, whether on a burger bun,...
Cucumber Seeds - Poinsett 76
65-70 Days to maturity. Cucumis sativus. Poinsett 76 Cucumber Seeds. Non-GMO, annual, open-pollinated, heirloom, monoecious, slicing cucumber. Suitable for growing in fields, containers (with support), garden plots, raised beds, and...
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...
Lettuce Seeds - Crisphead - Hanson Improved
75-85 days. These non-GMO Hanson Improved lettuce seeds grow into large green leaves and a white heart. Hanson Improved Lettuce is ready to harvest in 80 days. The Hanson Improved...
Cauliflower Seeds - Song TJS-65 - Hybrid
55-60 Days in Spring, 65-70 Days in Fall to maturity Brassica oleracea var. botrytis. Cauliflower Seeds - Song TJS-65. Annual, Hybrid. This is a non-GMO seed that has a yellowish...
Chia (Organic) - Bulk Grains
Chia seeds, a cousin of the mint plant, are a small multipurpose and nutritional powerhouse of a seed. Our chia seeds have been tested for microbes and are suitable for...
Watermelon Seeds - Picnic - Kleckley's Sweet
85 Days to maturity. Citrullus lanatus. Kleckley’s Sweet Watermelon Seeds. Non-GMO, annual, open-pollinated, heirloom, heat tolerant, seeded, picnic watermelon. Suitable for growing in garden plots. Kleckley's Sweet was also called...
Tomato Seeds - Slicing - Striped German
80 Days to maturity (from transplant). Solanum lycopersicum. Striped German Tomato Seeds. Non-GMO, warm season annual, open-pollinated, heirloom, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds, and...
Celosia Seeds - Crested - Armor Mix
85-95 Days to maturity. Celosia plumosa. Prestige Scarlet Crested Celosia Flower Seeds. Non-GMO, Annual. These striking and vigorous bedding plants are ideal for hot summer gardens. They display showy cockscomb...
Torenia Seeds - Kauai Mix (Pelleted)
84-91 Days to maturity. Torenia fournieri. Torenia Kauai Mix Seeds. Non-GMO, Ornamental, Premium, Annual. Kauai Mix seeds easily grow into stunning, eye-catching, and low-maintenance torenias bursting with vivid blooms of...
Pepper Seeds - Hot - Jamaican Yellow Habanero
80-89 Days to maturity (from transplant). Capsicum chinense. Jamaican Yellow Pepper Seeds. Non-GMO, annual, open-pollinated, high yielding, deer resistant, heat tolerant, drought tolerant, hot pepper with extra hot heat levels....
Retain - Water Retention Soil Additive
Retain plant crystals are a safe and easy-to-use soil additive made out of water-absorbing ingredients (cross-linked polyacrylate, bentonite clay, lava rock, and silicates) that absorb up to 40x its own...
Adzuki Bean (Organic) - Bulk Grains
Adzuki beans, also known as red mung beans, are a key crop in East Asia. They can be used as a kitchen staple or bulk up a food storage stash....
Tomato Seeds - Slicing - Phoenix Hybrid
70 Days to maturity (from transplant). Solanum lycopersicum. Phoenix Hybrid Tomato Seeds. Non-GMO, annual, F1 hybrid, determinate, heat tolerant, slicing tomato. Suitable for growing in garden plots, raised beds, and...
Pansy Seeds - Halloween II
91-98 Days to maturity. Viola × wittrockiana. Halloween II Pansy Seeds. Non-GMO, open-pollinated, Premium Quality Seeds, annual. Halloween II pansy seeds are a stunning, compact, and "spooky" addition to grow...
Phlox Seeds - 21st Century Mix (coated)
70-85 Days to maturity. Phlox drummondii. Phlox 21st Century Mix Seeds. Non-GMO, Annual. 1st Century Mix phlox seeds are an adorable, compact, and vibrant addition to grow in your garden....
Cauliflower Seeds - All Year Round
Non-GMO and Heirloom All Year Round Cauliflower is one of the most straightforward cauliflower varieties. Seed matures in 65 days and produces a large, tight, white head. In many zones,...
Kamut (Organic) - Bulk Grains
Triticum turanicum. Kamut® is the brand name of Khorasan wheat and is an ancient relative of modern durum wheat which originated in Mesopotamia. When purchasing the trademarked Kamut brand you...
Pak Choi Seeds - Hotau Improved Hybrid
30-40 days to maturity.Brassica rapa var chinensis. Hotau Improved Hybrid Pak Choi Chinese Cabbage Seeds. Non-GMO, warm or cool-season annual, hybrid. This is a mini-type pak choi that is commonly...
pH Test Indicator Drops
pH test drops by General Hydroponics. Complete pH testing Kit. Simple and inexpensive method to roughly measure the pH of your water. More accurate than pH test strips. Good for...
Cucumber Seeds - Marketer
55-65 Days to maturity. Cucumis sativus. Marketer Cucumber Seeds. Non-GMO, annual, open-pollinated, heirloom, 1943 AAS winning, monoecious, slicing cucumber. Suitable for growing in fields, containers (with support), garden plots, raised...
Gourd Seeds - Bonanza
80-90 days to maturity. Luffa acutangula ’Bonanza’. Bonanza Gourd Seeds. Non-GMO, warm-season, annual, open-pollinated, heirloom gourd seed. This vigorous and productive plant produces a high yield of edible fruit on...
Watermelon Seeds - Icebox - Yellow Gem Sweet
80 days to maturity. Citrullus lanatus. Yellow Gem Sweet Watermelon Seeds. Non-GMO, annual, open-pollinated, heat tolerant, seeded, icebox watermelon. Now a true yellow Crimson Sweet watermelon. ~ 400 seeds per...
Radish Seeds - Shirahime Hatsuka Daikon
22 to 30 Days to maturity. Raphanus sativus. Shirashime Hatsuka Daikon Radish Heirloom Seeds. Cool Season Annual. A uniquely small daikon radish, Shirashime Hatsuka is hardy, quick to harvest, and...
Squash Seeds - Winter - Queensland Blue
95 days. Non-GMO. Heirloom. Queensland Blue Winter Squash Seeds from True Leaf Market to enjoy the sweet flavor of squash in soups, pies, and more. This heirloom winter squash from...
Pepper Seeds - Sweet - White Cloud
70 Days to maturity (from transplant). Capsicum annuum. White Cloud Pepper Seeds. Non-GMO, annual, open-pollinated, heirloom, sweet pepper with no heat. 0 Scoville Heat Units. Suitable for growing in garden...
Pepper Seeds - Sweet - Rainbow Bell Blend
60-69 Days to maturity (from transplant). Capsicum annuum. Rainbow Bell Blend Pepper Seeds. Non-GMO, annual, high yielding, drought tolerant, sweet pepper with no heat levels. 0 Scoville Heat Units. Suitable...
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