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]()
Cosmos Seeds - Sensation Mixture
49-63 Days to maturity. Cosmos bipinnatus. Sensation Mixture Cosmos Seeds. Non-GMO, annual, Heirloom, Open Pollinated. Sensation Mix cosmos seeds grow some of the season's most timeless and familiar blooms. Sensation...
Cucumber Seeds - Pickling - Bush Pickle
50 Days to maturity. Cucumis sativus. Bush Pickle Cucumber Seeds. Non-GMO, annual, open-pollinated, heirloom, monoecious, pickling cucumber. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses (with...
Tomato Seeds - Slicing - Marglobe
72 Days to maturity (from transplant). Solanum lycoperscium. Marglobe Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, determinate, drought tolerant, heat tolerant, slicing tomato. Suitable for growing in garden plots, raised beds,...
Broccoli - Calabrese Green Sprouting (Organic)
Certified Organic by Oregon Tilth. Green Calabrese Broccoli Sprouting Seeds. Non-GMO, Heirloom Seeds. 60-90 days. Dark green 20-30 inch broccoli plants bear a close-beaded central head 3 to 7 inches...
Larkspur Seeds - Giant Imperial Mixture
77-84 days to maturity. Delphinium consolida. Giant Imperial Mix Larkspur Flower Seeds. Non-GMO, annual, open-pollinated. This crop is suitable for growing in fields, containers, garden plots, raised beds, and greenhouses....
Squash Seeds - Winter - Delicata
Non-GMO Delicata Winter squash is ready in 100 days. This is one of the tastier winter vine squashes with creamy flesh tastes like sweet potatoes. This is where the other...
Vinca Seeds - Pacifica XP Series
98-105 Days to maturity. Catharanthus roseus. Pacifica XP Series Vinca Seeds. Non-GMO, open-pollinated, annual. Premium Quality Seeds. Pacifica XP seeds easily grow into convenient, tidy, and low-maintenance vincas bursting with...
Cucumber Seeds - Tokiwa
55-75 Days to maturity. Cucumis sativus var. tokiwa. Tokiwa Cucumber Seeds. Warm-season annual heirloom. Non-GMO. This uniform, dark green variety grows 1.5" in diameter and 9-10" long. Although the fruit...
Snapdragon Seeds - Liberty Classic Series Mix
84-98 Days to maturity. Antirrhinum majus. Liberty Classic Series Mix Snapdragon Seeds. Non-GMO, Premium Quality Seeds, hybrid, annual. Growing Liberty Classic Series Mix snapdragon seeds this season is a timeless,...
Cucumber Seeds - Spacemaster 80
60-65 Days to maturity. Cucumis sativus. Spacemaster 80 Cucumber Seeds. Non-GMO, annual, open-pollinated, heirloom, monoecious, slicing cucumber. Suitable for growing in fields, containers (with support), garden plots, raised beds, and...
Strawberry Seeds - Berries Basket White Hybrid
Berri Basket White Hyrbid strawberries are ready in 85 days. Strawberry variety is well suited for baskets. Hardy to zone 5, the ever-bearing, runnerless, compact and bushy plants bear large,...
Jicama Seeds - Thai
150 Days to maturity. Pachyrhizus erosus . Thai Jicama Seeds. Annual, Open Pollinated. This Asian variety of jicama yields larger tubers than Mexican Jicama. It has sweet and crisp light-colored...
Hollyhock Seeds - Summer Carnival Mix
112-119 days to maturity. Alcea rosea. Hollyhock Summer Carnival Mixture Seeds. Non-GMO, Annual or Biennial. Summer Carnival Mix hollyhock seeds promise to turn any stale flower bed into a sensational...
Radish Seeds - French Breakfast
Heirloom and Non- GMO French Breakfast Radish is ready in 24 days. These radishes have blunt and oblong shape which are mostly red with some white at the tip. The...
Pumpkin Seeds - Cinderella (Organic)
This is the pumpkin to grow if you want a fairytale ending. Also called Rouge Vif D"Etampe, this is the pumpkin drawn in Disney's Cinderella. Non- GMO Organic Cinderella Pumpkin...
Carrot Seeds - Black Nebula
Daucus carota This highly attractive open pollinated carrot variety was bred especially for the home gardener. The dark purple roots can be eaten fresh, roasted, steamed or used for dye....
Okra Seeds - Hill Country Red
60-70 days. Hill Country Red Okra Seeds. Abelmoschus esculentus. Non-GMO. Heirloom. Hill Country Red okra seeds mature to 6 feet tall and is a good producer of thick green pods...
Tomato Seeds - Slicing - Bush Early Girl Hybrid
63 Days to maturity (from transplant). Solanum lycoperscium. Bush Early Girl Hybrid Tomato Seeds. Non-GMO, annual, F1 hybrid, determinate, heat tolerant, slicing tomato. Suitable for growing in containers, garden plots,...
Mustard - Brown (Organic) - Sprouting Seeds
5-6 Days to Harvest. Brassica juncea. Organic Brown Mustard Sprouting Seeds. Organic. Non-GMO. Sprouting. High Germination. One of the spiciest and most robust sprouts available, non-GMO Organic brown mustard seeds...
Watermelon Seeds - Picnic - Georgia Rattlesnake
Citrullus lunatus (90 days) AKA "Gypsy" and "Augusta Rattesnake" watermelon. Georgia Rattlesnake is said to have been developed in the 1830s. It has been an old Southern favorite for a...
Instant Garden Heirloom Seed Collection
Instant Garden Seed Collection is the ideal beginner's assortment. We've handpicked 15 of the easiest, most prolific annual fruits and vegetables that will have you feeling like a seasoned gardener...
Pepper Seeds - Hot - Habanero Caribbean Red
110-119 Days to maturity (from transplant). Capsicum chinense. Caribbean Red Pepper Seeds. Non-GMO, annual, open-pollinated, heirloom, high-yielding, deer-resistant, heat-tolerant, drought-tolerant hot pepper with extra-hot heat levels. 100,000 to 350,000 Scoville...
Petunia Seeds - Double Madness Series (pelleted)
98-105 Days to maturity. Petunia x hybrida. Pelleted Double Madness Series Petunia Seeds. Non-GMO, hybrid, Premium Quality Seeds, annual. Double Madness Series seeds grow a hardy and spectacular alternative to...
Pumpkin Seeds - Fairytale
Non-GMO French heirloom pumpkin is a fairytale in the garden. Ready in 125 days, this pumpkin is beautiful and excellent for baking. This is due to its fine grain flesh--...
Squash Seeds - Winter - Pink Banana Jumbo
105-115 Days to maturity. Cucurbita maxima Pink Banana Jumbo Winter Squash Seeds. Non-GMO, annual, heirloom, open-pollinated. Suitable for growing in fields, garden plots, raised beds, and large containers. Noted for...
Tomato Seeds - Slicing - Black Krim
75 Days to maturity (from transplant). Solanum lycopersicum. Black Krim Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, heat tolerant, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds, and...
Tomato Seeds - Paste - San Marzano Determinate (Organic)
80-90 Days to maturity (from transplant). Solanum lycoperscium. San Marzano Determinate (Organic) Tomato Seeds. Non-GMO, annual, open-pollinated, organic, heirloom, determinate, paste tomato. Suitable for growing in garden plots, raised beds,...
Dill Seeds - Dwarf Fernleaf
Non-GMO, Heirloom Dwarf Fernleaf Dill Herb Garden Seed from True Leaf Market. Anethum graveolens. Dwarf Fernleaf Dill grows as slow-bolting warm-season annuals and is native to South Russia and regions...
Spinach Seeds - America
America Spinach Seeds. 43 to 55 Days. Non-GMO, Open Pollinated, Heirloom. Spinacia oleracea. AKA: American, America Long Standing. The America Spinach variety is tolerant of heat and drought and is...
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