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]()
Endive Seeds - Frisee
Frisee endive grows best in cool conditions. The plant grows 8-12" tall and produces delicate frilly leaves of a yellow-green color. They have a slightly bitter but mild taste that...
Broccoli Seeds - Early Purple Sprouting
Brassica oleracea var. italica (59 days) Purple sprouting broccoli is an old English type broccoli. Early Purple Sprouting Broccoli is not only a colorful addition to salads, but it is...
Okra Seeds - Jing Orange
Jing Orange Okra Seeds. 30 to 60 days to maturity. Abelmoschus esculentus. Heirloom, Annual. Jing Orange is an Asian okra, known for it is stunning red-orange color. Approximately 500 seeds/ounce....
Bacopa Seeds - Utopia (MSP)
56-63 Days to maturity. Sutera cordata. Utopia Bacopa Seeds. Non-GMO, annual. Utopia bacopa flower garden seeds (Bluetopia & Snowtopia) grow one of summer's most exciting bedding, trailing, and hanging plants....
California Poppy Seeds - Mission Bells
56-70 Days to maturity. Eschscholzia californica. Mission Bells California Poppy Seeds. Non-GMO, annual. Mission Bells California poppy seeds grow a classic, durable, and authentic touch of the cool California hills...
Gourd Seeds - Bitter Green - Hybrid
56-63 Days to Maturity (after transplanting). Momordica charantia. Bitter Green Bitter Gourd Seeds. Non-GMO, warm-season, annual, hybrid. This bitter gourd produces a generous crop of large, heavy, and uniform fruits...
Cilantro Seeds - Santo (Organic)
55-60 Days to maturity. Coriandrum sativum. Organic Cilantro Santo Seeds. Non-GMO, annual, organic, open-pollinated, heirloom. Suitable for growing in containers, garden plots, raised beds, and greenhouses. Slow to bolt compared...
Melon Seeds - Japanese - Ichiba Kouji Hybrid
55-60 Days to maturity. Cucumis melo. Ichiba Kouji Japanese Hybrid Melon Seeds. A non-GMO, annual, hybrid, heat tolerant, drought tolerant, Asian Melon. Suitable for growing in garden plots, raised beds,...
Alyssum Seeds - Easter Bonnet Series (Raw or MSP)
63-77 Days to maturity. Lobularia maritima. Easter Bonnet Series Alyssum Multi-seed Pelleted Seeds. Non-GMO, Open-Pollinated, Annual. Open-pollinated, multi-pelleted seeds. Easter Bonnet Series Alyssum seeds promise delicate and early spring blooms...
Kale Seeds - Ethiopian
50 to 60 Days to maturity. Brassica carinata. Ethiopian Kale Seeds. Annual, Heirloom. This leafy green originated in Ethiopia, in East Africa. It is known by various names, including Ethiopian...
French Marigold Seeds - Dainty Marietta
50-65 Days to maturity. Tagetes patula' Dainty Marietta'. Dainty Marietta French Marigold Seeds. Non-GMO, annual, open-pollinated. This drought-tolerant French Dwarf Marigold is truly one of a kind. The striking yellow...
Okra Seeds - Cows Horn
Abelmoschus esculentus (55 days) This heirloom okra dates back to around the Civil War. It has a twisted shape that resembles a cow's horn. These large pods can reach 14"...
Kale Seeds - Red
Red Kale Seeds. Brassica napus. Annual. Open Pollinated, Heirloom, Non-GMO. Excellent option for growing as a microgreen. 8 to 12 days for microgreen harvest, 20 to 25 days for baby...
Broccoli Seeds - Chinese Broccoli - Early Jade - Hybrid
40-50 days to maturity. Brassica oleracea var alboglabra ‘Early Jade’. Early Jade Chinese Broccoli Seeds. Non-GMO, Hybrid, Cool-season Annual. Closely related to European cabbage, Chinese Broccoli was introduced to China...
Swiss Chard Seeds - Rhubarb
55 days. Rhubarb Swiss Chard leaves are a beautiful variety and excellent in the kitchen as well. Recommended by USU. This plant produces dark reddish-green, heavily crumpled leaves, beautiful crimson...
Tarragon Seeds - Mexican
70-90 Days to maturity. Tagetes lucida. Mexican Tarragon Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Discover the warm, licorice-scented charm...
Edible Flower Seed Mix
50-70 Days to maturity. Edible Flower Seed Mix Seeds. Open Pollinated. Non-GMO. These mixed edible flower seeds are suitable for planting throughout North America. Coverage is approximately 10 ounces per...
Cress Seeds - Upland
Non-GMO, Heirloom Upland Cress Herb Garden Seed from True Leaf Market. Barbarea verna. Upland Cress, also known as "European greens" is native to regions in China. Upland Cress is a...
Spinach Seeds - Seaside - Hybrid
Spinach Seeds - Seaside - Hybrid. Non-GMO. Spinacea oleracea. 25-30 days maturity for baby leaf, 40-60 days to full maturity. Cool season annual. Seaside is a very uniform baby leaf...
Broccoli Raab Seeds - Sorrento
40 to 50 Days until mautre. Brassica papa afar ruvo. Sorrento Broccoli Raab Seeds. Annual. Heirloom. Non-GMO. Open-pollinated. “Rapini,” is a separate moniker for the flowering Brassica. This is a...
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...
Tomato Seeds - Salad - Glacier
56 Days to maturity (from transplant). Solanum lycopersicum. Glacier Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, determinate, salad tomato. Suitable for growing in garden plots, raised beds, and greenhouses. An extra...
Okra Seeds - Cows Horn - Organic
Abelmoschus esculentus. (55 days) This heirloom okra dates back to around the Civil War. It has a twisted shape that resembles a cow's horn. These large pods can reach 14"...
Oats and Peas Cover Crop Seed Mix (Organic)
50-70 Days to termination. Organic Oat and Peas Cover Crop Mix Seeds. Non-GMO, organic, annual, winter-killing, no-till, forage-friendly. Plant as a spring, summer, or fall cover crop to enjoy the...
Ricinus Seeds - Castor Bean
56-63 Days to maturity. Ricinus communis. Castor Bean Seeds: Non-GMO. Open Pollinated. Ornamental. Annual. Castor Bean seeds grow one of the tallest, and most notorious blooms in the world! Ricinus...
Kale Seeds - Scarlet
Scarlet Kale Seeds. Can be grown in containers. Brassica oleracea. 50 days to maturity. Open Pollinated. Annual. Kale Scarlet is heavily curled with sturdy leaves that are red-purple and become...
Basil Seeds - Licorice
Non-GMO, Open-pollinated, Heirloom Licorice Basil Herb Seed from True Leaf Market. Ocimum basilicum is native to various Asian regions. As basil has many different varieties, Licorice Basil Herb is considered...
French Marigold Seeds - Sparky - Organic
63-77 Days to maturity. Tagetes patula. Organic Sparky Marigold Seeds. Non-GMO, annual, Open Pollinated. Sparky Mixture marigold seeds offer one of the most vibrant and inexpensive blooms available to the...
Radish Seeds - China Rose - Organic
55 days. This popular radish for sprouting produces crisp rose colored winter radishes. Radishes are 8" long by 2" wide with rose colored skin and white flesh. Not suitable for...
Swiss Chard Seeds - Yellow
55 days. The Yellow Swiss Chard is a variety that produces dark green leaves on bright Yellow stems. These stems are excellent as an ornamental piece in the garden, but...
Zinnia Seeds - Peppermint Stick
55-70 Days to maturity. Zinnia elegans. Peppermint Stick Mixture Zinnia Seeds. Non-GMO, open-pollinated, annual. Peppermint Stick Mix Zinnia Flower seeds are the most unique, candy-striped zinnia ever! They offer prolific...
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