Warm Winter / Frost-Free Areas
Zones: 9b–12
March can be peak garden season in these warm-winter zones. It is also a "pivot" month for gardening in much of the warmer parts of these zones. The risk of frost is over. Cool-season crops are in and doing well. March & April are the times to start transitioning from cool-season greens to heat-loving summer crops.
Indoors (fresh harvests):
- Microgreens: peas, broccoli, sunflowers, arugula.
- Sprouts: alfalfa, broccoli, radish, mung
- Herbs & greens under lights: chives, parsley, mint
Transplants to move outdoors (weather permitting - harden first): pepper, tomato, eggplant, melons, basil
Crops that can be directly sown outdoors in March: cucumber, squash, beans, corn, melons, okra, plus replanting for many greens and root crops
Cover crops: buckwheat, cow peas, sorghum
Tip: A SoCal zone 10 can be different from a Florida zone 10. Consider checking with your state Extension Service office for more specific recommendations and guidelines.
Use your USDA zone as a guide. Microclimates matter—coastal/urban spots run warmer; high elevation runs colder.
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![Legend: H for Heirloom, O for Organic, A for AAS Winner, F for staff favorites]()
Lavender Seeds - Munstead
126-140 Days to maturity. Lavender angustifolia. Munstead Lavender Seeds. Heirloom, Non-GMO, Open Pollinated. Perennial. A fragrant robust lavender that, due to its short size and tightly held blooms (about 8...
Rosemary Seeds (Organic)
120-180 Days to maturity. Salvia rosmarinus. Organic Rosemary Seeds. Non-GMO, organic, open-pollinated, heirloom, perennial herb. Rosemary is a popular culinary aromatic herb that can be grown in garden plots and...
Leek Seeds - Giant Musselburgh
80-130 days. Allium porrum. Giant Musselburgh Leek Seeds. Non-GMO, annual, heirloom, open-pollinated. This crop is suitable for garden plots, raised beds, and market gardens. Giant Musselburgh is a classic Scottish...
Cotton Seeds - Sea Island Brown
135 Days to maturity. Gossypium barbadense. Sea Island Brown Cotton Seeds. Non-GMO, open-pollinated, heirloom cotton seeds. Annual in zones 8-11. It may be grown in zones 6-7 if started indoors...
Amaranth Seeds - All Red Leaf
100-130 Days to maturity. Amaranthus cruentus. All Red Leaf Amaranth Seeds. Non-GMO, warm weather open-pollinated annual. Also known as Red Ocean Amaranth, this bright red leafy vegetable has ample health...
Cotton Seeds - Arkansas Green Lint
130-140 Days to maturity. Gossypium hirsutum. Arkansas Green Lint Cotton Seeds. Non-GMO, open-pollinated, heirloom cotton seeds. Annual in zones 8-11. It may be grown in zones 6-7 if started indoors...
Cotton Seeds - Mississippi Brown
130 Days to maturity. Gossypium hirsutum. Mississippi Brown Cotton Seeds. Non-GMO, open-pollinated, heirloom cotton seeds. Annual in zones 8-11. It may be grown in zones 6-7 if started indoors and...
Cotton Seeds - Nankeen
130 Days to maturity. Gossypium hirsutum. Nankeen Cotton Seeds. Non-GMO, open-pollinated, heirloom cotton seeds. Annual in zones 8-11. It may be grown in zones 6-7 if started indoors and protected...
Lavender Seeds (Organic)
90+ Days to maturity. Lavandula angustifolia. Organic Lavender Seeds. Non-GMO, perennial, organic, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, and raised beds. Organic English Lavender—also called Vera...
Cotton Seeds - Red Beauty
130 Days to maturity. Gossypium hirsutum. Red Beauty Cotton Seeds. Non-GMO, open-pollinated, heirloom, ornamental cotton seeds. Annual in zones 8-11. It may be grown in zones 6-7 if started indoors...
Gourd Seeds - Bushel
Bushel gourds are giant round and a gray-brown shade. Gourds grow to be 3-5‚ in diameter and 25-100 lbs, but can be made lighter when allowed to dry on the...
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