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 - Slicing - Katana Hybrid
60 Days to maturity (from transplant). Solanum lycopersicum. Katana Hybrid Japanese Tomato Seeds. Non-GMO, warm season annual, F1 hybrid, semi-determinate, slicing tomato. Suitable for growing in garden plots, raised beds,...
Bean Seeds - Bush - Landreth Stringless
50-60 Days to maturity. Phaseolus vulgaris. Landreth Stringless Bush Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, heavy yielding, drought tolerant, bush, snap, green beans. Suitable for growing in containers, garden plots,...
Broccoli Seeds - Ramoso Santana
Ramoso Santana Broccoli Seeds. 48 to 70 days. Brassica Oleracea. Non-GMO, Open Pollinated. A rare and little known crop of sprouting broccoli, Ramoso Santana is a delicious and slow-bolting Mediterranean...
Tomato Seeds - Slicing - Red Siberian
60-70 Days to maturity (from transplant). Solanum lycoperscium. Red Siberian Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, determinate, slicing tomato. Suitable for growing in containers, garden plots, raised beds, and greenhouses....
Radish Seeds - China White Winter
China White Winter Radish Seeds. 60 days to maturity. Raphanus sativus. Heirloom, Annual. A light frost tolerant heirloom dating back to the late 1800s. Produces long, cylindrical radishes of 6...
Tobacco Seeds - Comstock
~45–50 Days from transplant to maturity. Nicotiana tabacum. Comstock Tobacco Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Resistant to deer....
Tomato Seeds - Cherry - Green Grape
65-75 Days to maturity (from transplant). Solanum lycoperscium. Green Grape Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, determinate cherry tomato. Suitable for growing in garden plots, raised beds, and greenhouses. Developed...
Swiss Chard Seeds - Flamingo
Flamingo Swiss Chard Seeds. 60 days to full maturity. 30 days to maturity for baby leaves. Can be grown in containers. Can be grown as micro greens. Beta vulgaris. Open...
Tomato Seeds - Slicing - Fireworks
50-60 Days to maturity (from transplant). Solanum lycopersicum. Fireworks Tomato Seeds. Non-GMO, warm season annual, open-pollinated, heirloom, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds, greenhouses, and...
Alyssum Seeds - Clear Crystal (MSP Pelleted)
56-63 Days to maturity. MSP - Multi-Seed Pelleted. Lobularia maritima ’Clear Crystal’. Clear Crystal Alyssum Seeds. Non-GMO, open-pollinated, annual, pelleted seeds. Clear Crystal Alyssum flower seeds grow one of the...
Tomato Seeds - Cherry - Honeybee Hybrid
60 Days to maturity (from transplant). Solanum lycoperscium. Honeybee Hybrid Tomato Seeds. Non-GMO, annual, F1 hybrid, semi-determinate cherry tomato. Suitable for growing in garden plots, raised beds, containers, and greenhouses....
Eggplant Seeds - Morden Midget (organic)
65 Days to maturity. Solanum melongena. Organic Morden Midget Eggplant Vegetable Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, italian eggplant. Suitable for growing in greenhouses, garden plots, raised beds, or containers....
Gourd Seeds - Nam Tao Yao
65-70 days maturity after transplant. Lagenaria siceraria ’Nam Tao Yao’. Nam Tao Yao Gourd Seeds. Non-GMO, warm-season, annual, hybrid. This edible variety is vigorous, disease-tolerant, and high yielding. The fruit...
Bean Seeds - Bush - Jackson Wonder Lima
65-85 Days to maturity. Phaseolus lunatus. Jackson Wonder Lima Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, high-yielding, drought-tolerant lima bean. Suitable for growing in containers, garden plots, raised beds, and greenhouses....
Basil Seeds - Cinnamon (Organic)
60-90 Days to maturity. Ocimum basilicum. Organic Cinnamon Basil Seeds. Non-GMO, annual, organic, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. As an heirloom...
Gourd Seeds - Buab Khom - Hybrid
50-60 days to maturity. Luffa acutangula ’Buab Khom’. Buab Khom Gourd Seeds. Non-GMO, warm-season, annual, hybrid. Buab Khom is a hybrid ridge gourd that yields many high-quality fruits. The fruits...
Cardoon Seeds - Ivory White
Non-GMO, heirloom Ivory White Cardoon seeds from True Leaf Market let you grow the untamed predecessor of the domesticated artichoke, either for its ornamental value or for the delicious mild...
Alyssum Seeds - Snow Crystals (Pelleted)
63-77 Days to maturity. Lobularia maritima. Snow Crystals Alyssum. Non-GMO, Open-Pollinated, Annual. Snow Crystals flower seeds easily grow eye-catching and fragrant Alyssum mounds bursting in vivid shades of alpine white....
Tomato Seeds - Cherry - Manitoba
60-70 Days to maturity (from transplant). Solanum lycoperscium. Manitoba Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, determinate, cherry tomato. Suitable for growing in garden plots, raised beds, greenhouses. Resistant to Fusarium...
Tomato Seeds - Cherry - Currant Red
70 Days to maturity (from transplant). Solanum lycoperscium. Currant Red Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, indeterminate, cherry tomato. Suitable for growing in garden plots, raised beds, and greenhouses. Currant...
Spring Mix Cover Crop
30-90 Days to termination. Spring Mix Cover Crop Seeds. Non-GMO, annual, no-till, forage-friendly, and winter-killing with extended freezing temperatures. This mix contains plants that grow well during the cool spring...
Pepper Seeds - Hot - Hot Portugal (Organic)
60-85 Days to maturity (from transplant). Capsicum annuum. Organic Hot Portugal Pepper Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, deer resistant, hot pepper with medium to hot heat levels. 5,000 to...
Tomato Seeds - Cherry - Gardener's Delight (Organic)
50-80 Days to maturity (from transplant). Solanum lycoperscium. Organic Gardeners Delight Tomato Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, indeterminate, cherry tomato. Suitable for growing in garden plots, raised beds, and...
Bean Seeds - Bush - French Garden
50-60 Days to maturity. Phaseolus vulgaris. French Garden Bush Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, high-yielding, bush, snap green bean. Suitable for growing in containers, garden plots, raised beds, and...
Dianthus Seeds - Cottage Pinks
60-90 days to maturity. Dianthus plumarius ’Cottage Pinks’. Dianthus Cottage Pinks Flower Seeds. Non-GMO, open-pollinated, perennial flower. This late spring to mid-summer bloomer has a delightful clove scent when in...
Zinnia Seeds - Red Beauty - Organic
60-70 Days to maturity. Zinnia elegans. Red Beauty Zinnia Seeds. Non-GMO, organic, annual. These zinnias are a perfect choice for any grower or hobby gardener looking for the best cut...
Squash Seeds - Summer - Black Zucchini (Organic)
44-62 Days to maturity. Cucurbita pepo. Organic Black Zucchini Summer Squash Seeds. Non-GMO, warm weather annual, open-pollinated, summer squash. While this variety is named ‘black’, this zucchini actually has a...
Nasturtium Seeds - Empress of India (Organic)
65-75 Days to maturity. Tropaeolum majus ’Empress of India’. Organic Nasturtium Empress of India Seeds. Non-GMO, perennial, heirloom. This variety of Nasturtium seed has enriched garden spaces for centuries. Attractive...
Sunflower Seeds - Zohar (Organic)
50-60 Days to maturity. Helianthus annuus. Zohar F1 Hybrid Sunflower Seeds: Non-GMO. Organic. Open Pollinated. Ornamental. Annual. Zohar F1 Hybrid is a beautiful pollen-less sunflower that will brighten up your...
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