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]()
Lettuce Seeds, Leaf - Red Sails - Organic
Organic Red Sails Leaf Lettuce Seeds. 45 days to maturity. Baby leaf maturity at 21 days. Heirloom, Non-GMO, Annual. Lactuca sativa. Radiant bronze-red leaves form a full rosette delicately ruffled...
Parsley Seeds - Japanese Mitsuba
50-60 Days to maturity. Cryptotaenia japonica. Japanese Mitsuba Parsley Seeds. Non-GMO, annual/perennial, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, and raised beds. The long stalks of this...
Barley - Organic - Cover Crop Seeds
70 Days. Hordeum vulgare. Cover Crop. Organic. Heirloom. Barley is a short-season, early maturing crop grown commercially in both irrigated and in dry land environments. Because this grain adapts well...
Radish Seeds - Black Spanish Round
50-70 Days to maturity. Raphanus sativus. Black Spanish Round Radish Seeds. Non-GMO, annual, open-pollinated, heirloom. Also known as Noir Gros Rond D’hiver or Round Black Spanish Radish. Suitable for growing...
Hairy Vetch - Organic - Cover Crop Seeds
80-90 Days. Vicia villosa. Organic. Annual. Non-GMO. Such a vigorous annual cover crop that it is considered invasive in much of the United States, non-GMO hairy vetch is a European...
Kale Seeds - Dazzling Blue
Dazzling Blue Kale Seeds. 50 - 60 days to maturity. Brassica oleracea. Open Pollinated, Annual. Make any salad gorgeous with the unique coloring of Kale Dazzling Blue. Approximately 8,000 seeds/ounce...
Lettuce Seeds - Red Oakleaf - Organic
Lactuca sativa (38 days) A deep merlot colored leaf resembling an oak leaf with deep lobes. Excellent for baby leaf production. Unlike some other reds, oakleaf maintains a mild flavor...
Chervil Seeds - Curled
Non-GMO, Heirloom Curled Chervil Garden Seed from True Leaf Market. Anthriscus cerefolium. These hardy annual herbs produce as a cool season crop and originate from Southeast Europe and West Asia....
Mighty Mustard® Pacific Gold - Cover Crop Seeds
35-40 Days. Brassica juncea. Cover Crop. Non-GMO. Open-Pollinated. Mighty Mustard® Pacific Gold seeds are one of the most beneficial, diverse, and quickly maturing cover crops for the home garden. Mighty...
Onion Seeds - Intermediate - Shonan Red
160 Days to maturity. Allium cepa. Shonan Red Onion Seeds. Non-GMO, annual, open-pollinated, heirloom, cold tolerant, bulbing, intermediate-day onion. Suitable for growing in greenhouses, garden plots, and raised beds. The...
Lettuce Seeds - Butterhead - Way-A-Head
Way-A-Head butterhead lettuce is crisp and mild. Heads are compact and medium size. A great crop to grow in limited space for high yields. Leaves are medium green and smooth....
Beet Seed - White Detroit
55 Days. Beta vulgaris. Annual. Heirloom. Open-pollinated. Same classic flavor, non-GMO Detroit White beet seeds grow a clean, stainless alternative to traditional messy old-world garden beets. Widely known as 'sugar...
Beet Seeds - Gourmet Blend
50-60 days. Beta vulgaris. Gourmet Blend Beet Seeds. Non-GMO, annual, open-pollinated. This crop is suitable for garden plots, raised beds, and containers. A colorful five-variety mix—Bull's Blood, Detroit Dark Red,...
Lettuce Seeds - Romaine - Petite Rouge
70 Days to maturity. Lactuca sativa. Petite Rouge Romaine Lettuce Seeds. Also known as Petite Rouge Cos lettuce. Non-GMO. Annual. Open Pollinated. Matures into a beautifully speckled bronze leaf used...
Pak Choi Seeds - Dwarf White Stem
40-45 Days to maturity. Brassica rapa Chinensis group. Dwarf White Stem, Pak Choi (Bok Choy) Seeds. Non-GMO Annual, Heirloom. This ‘Baby Bok Choy’, is the famous Asian green. It grows...
Cabbage Seeds - Early Jersey Wakefield
Brassica oleracea var. capitata (63 days) Early Jersey Wakefield cabbage forms a compact, somewhat conical head with glaucous-green leaves. Early Jersey Wakfield is a wonderful early heading variety, occupying little...
Parsley Seeds - Plain or Single
70-80 Days to maturity. Petroselinum crispum. Plain or Single Parsley Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Plain or Single...
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...
Broccoli Seeds - Chinese Broccoli - Late Jade - Hybrid
60-70 days to maturity. Brassica oleracea var alboglabra ‘Late Jade’. Late Jade Chinese Broccoli Seeds. Non-GMO, Hybrid, Cool-season Annual. Originating in the Mediterranian, Chinese Broccoli was introduced to China in...
Beet Seeds - Red Ace Hybrid
50 days. The Red Ace beet is a variety that is highly adaptable and that can grow in cooler temperatures. The Red Ace matures a week before many other beets,...
Lettuce Seeds - Tom Thumb - Organic
Lactuca sativa (50 days) Introduced some time in the 1850s. Small, round head with delicate leaves. About the size of a baseball. Perfect for one-person salad. Can be planted close...
Columbine Seeds - Colorado Blue
2nd-year maturity. Aquilegia coerulea. Columbine Colorado Blue Seeds. Non-GMO, Perennial. Open Pollinated. Ornamental. Colorado Blue columbine seeds grow a spectacular favorite that promises an authentic slice of the Rocky Mountains...
Onion - Long - Southport White Globe 404
70-110 Days to maturity. Allium cepa. Southport White Globe Onion Seeds. Non-GMO, annual, open-pollinated, heirloom, cold tolerant, bulbing, long-day onion. Suitable for growing in greenhouses, garden plots, and raised beds....
Cauliflower Seeds - Veronica Romanesco Hybrid
77 days. This "Italian" type produces very symmetrical and spiraled, lime green heads with tightly beaded, pointed domes. Useful raw, cooked, or pickled, with a milder, sweeter flavor than standard...
Lupine Seeds - Texas Blue Bonnet
91-98 Days to maturity. Lupinus texensis’Texas Blue Bonnet’. Lupine Texas Blue Bonnet Seeds. Non-GMO, Annual. Texas Bluebonnet lupine seeds grow an old-fashioned favorite that promise to deliver a slice of...
Celery Seeds - Nan Ling Cutting
Non-GMO Nan Ling Cutting Celery is an Asian celery variety that has a sweet and delicate flavor. Cutting Celery is the familiar flavor in many Chinese dishes. Known for its...
Onion Seeds - Bunching - Ishikura Winter Long
40-60 Days to maturity. Allium fistulosum. Ishikura Winter Long Japanese Bunching Onion Seeds. Non-GMO, annual, perennial, open-pollinated, heirloom, cold hardy, bunching onions. Suitable for growing in greenhouses, garden plots, raised...
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...
Wildflower Seeds - Rocky Mountain Mix
Rocky Mountain Wildflower Mix seeds promise an authentic touch of the untamed American west in your very own garden. Wildflower Rocky Mountain Mix seeds grow a stunning blend of 22...
Turnip Seeds - Hakurei - Hybrid
Turnip Seeds - Hakurei - Hybrid. Non-GMO. Brassica rapa subsp. rapa. 25-45 days depending on type of maturity. Cool season annual. This outstanding Japanese turnip has an excellent sweet and...
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