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]()
Lemon Balm - Microgreens Seeds
24 to 30 days. Lemon Balm microgreens seeds, when grown as microgreens, are quite beautiful with a serrated edge and a pale maroon reverse. Patience is required when growing this...
Rye - Winter (Organic) - Grass Seeds
This is rye grain (Secale cereale) - not Ryegrass (Lolium). It is not for over-seeding lawns. Grow just like wheatgrass and barleygrass, and discover how rich the flavor of Rye...
Tomato Seeds - Cherry - Fox Cherry (Organic)
85 Days to maturity (from transplant). Solanum lycoperscium. Organic Fox Cherry Tomato Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, indeterminate cherry tomato. Suitable for growing in garden plots, raised beds, and...
Bean Seeds - Bush - Tendergreen
50-65 Days to maturity. Phaseolus vulgaris. Tendergreen Bush Bean Seeds. Non-GMO, annual, heirloom, high-yielding, heat tolerant, bush, snap, green bean. Suitable for growing in containers, garden plots, raised beds, and...
Pepper Seeds - Sweet - Canary Bell
100 Days to maturity (from transplant). Capsicum annuum. Canary Bell Pepper Seeds. Non-GMO, annual, open-pollinated, high-yielding, drought tolerant, sweet pepper with no heat. 0 Scoville Heat Units. Suitable for growing...
Kohlrabi - Early White Vienna - Microgreens Seeds
Up to 12 days. Non-GMO Early White Vienna Kohlrabi, (Brassica oleracea var. gongylodes). A lovely microgreen that is a favorite when making microgreens mixes. This high-germination seeds will soon fill...
Lettuce Seeds - Leaf - Royal Oakleaf
Royal Oakleaf lettuce is an improved Oakleaf variety that is slower to bolt. Heads form large rosettes of uniform leaves that are heat resistant. Leaves are dark green and shiny...
Petunia Seeds - Frost Series (Pelleted)
98-105 Days to maturity. Petunia x hybrida. Frost Series Petunia Seeds. Non-GMO, hybrid, Premium Quality Seeds, annual. Frost Series seeds grow a delightful, unique, and lively variation of the world-famous...
Cucumber Seeds - Asia Eun Cheon - Hybrid
55-60 Days to maturity. Cucumis sativus ‘Asia Eun Cheon’. Asia Eun Cheon Cucumber Seeds. Warm-season annual hybrid. Non-GMO. Asia Eun Cheon is a Korean hybrid cucumber that is early maturing...
Windowsill Self Watering Microgreens Kit
The one indoor gardening system that even the blackest of thumbs can use. Grow your own delicious superfoods in just 7-10 days. Kit includes enough microgreens seeds for 3 harvests:...
Green Lentils (Organic) - Bulk Grains
Our certified Organic green lentils are high in fiber, protein, and vitamins A, C, B complex and E, iron, calcium, and phosphorus. These green lentils are tested for microbes and...
Mustard Seeds - Japanese Red Giant
60-80 days. Brassica juncea var. rugosa. Japanese Red Giant Mustard Seeds. Non-GMO. Annual. Exceptionally broad-leafed and textured, Red Giant (Aka taka-na) is a Japanese mustard green specifically grown for its...
Sunflower Seeds - Chocolate Cherry
85-95 Days to maturity. Helianthus annuus. Non-GMO. Open Pollinated. Annual. Heirloom. Heirloom Chocolate Cherry sunflower seeds mature to be 6 to 7 feet tall ornamentals with deep burgundy petals and...
Melon Seeds - Cantaloupe - Honey Rock
80 Days to maturity. Cucumis melo. Honey Rock Cantaloupe Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, AAS winner, heat tolerant, Cantaloupe Melon. Suitable for growing in containers, garden plots, raised...
Carrot Seeds - Little Fingers - Organic
(65 days) Little Fingers baby gourmet carrot has tiny tender 3- 5" roots; 1/2 inch thick; golden orange, sweet and crisp. A perfect Nantes type carrot for munching or salads....
Valerian Seeds
60+ Days to maturity. Valeriana officinalis. Valerian. Non-GMO, perennial, open-pollinated, heirloom. Suitable for growing in garden plots, raised beds, containers, and fields. Resistant to deer. A tall, elegant perennial known...
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...
Basil Seeds - Sweet (Organic) - Microgreens
Organic Sweet Basil Seeds. 85 Days. Annual. Ocimum basilicum. Non-GMO, Certified Organic by Oregon Tilth. Sweet basil is similar to genovese basil but with an extra hint of sweetness with...
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...
Flower Seeds - Beneficial Bug Mix
Bring helpful bugs into your garden with this beautiful mixture of garden flowers, wildflowers and herbs. The Beneficial Bug Mix is designed to attract lacewings, lady beetles, hover flies, syrphid...
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...
Squash Seeds - Summer - Scallop Yellow Bush (Organic)
49 days to maturity. Cucurbita pepo. Organic Scallop Yellow Bush Summer Squash Seeds. Non-GMO, annual, heirloom, open-pollinated, organic. This is suitable for growing in fields, containers, garden plots, raised beds,...
Cucumber Seeds - Rhinish Pickle
Non-GMO, open-pollinated Rhinish Pickle Cucumber Seeds from True Leaf Market produce heirloom pickling cucumbers with black spines and small bumps. Growing between 4" and 6" long, Rhinish pickle cucumbers are...
Kale Seeds - Black Magic
Brassica oleracea Improved selection of lacinato kale with wider leaves and consistent dark color. Kale Seeds - Black Magic Seeds Per Package: 1 g - Approximately 250 Seeds 1 oz...
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...
Soybean - Black (Organic) - Sprouting Seeds
2-5 Days to Harvest. Glycine max L. Merr.. Organic Black soybean Sprouting Seeds. Organic. Non-GMO. Sprouting. High Germination. Considered a superfood, Organic black soybean sprouting seeds quickly sprout an antioxidant-rich...
Pepper Seeds - Hot - Poblano Ancho Grande
70-79 Days to maturity (from transplant). Capsicum annuum. Ancho Grande Pepper Seeds. Non-GMO, annual,open-pollinated, heirloom, hot-type pepper with mild heat levels. 1,000 to 2,000 Scoville Heat Units. Suitable for growing...
Mustard Seeds - Mizuna Red Streaks
45 days. 20 days for baby leaf. With a mild peppery mustard flavor, this green is great for salads as a baby green or a full-size green. The stalk has...
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