What to Plant in March in Zone 10: Warm Crops and Cool-Season Finish
In USDA zone 10, March finishes cool-season windows while warm-season tomatoes, peppers, beans, melons, and herbs stay open, with basil and marigold from...
Published by ThriveThyme
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What to Plant in March in Zone 10
In USDA zone 10, March wraps cool-season sowings and keeps warm-season planting in full swing. Cool greens, roots, brassicas, peas, and cover crops that opened mid-January mostly run through late March. Warm crops started in February (tomatoes, peppers, beans, squash, melons, herbs) stay open. From about March 1, basil, cucumber, marigold, pepper, and sunflower join the list.
Typical last frost for zone 10 averages around January 30, so March is well past average last frost. Confirm with the first-frost lookup and the first frost guide. Also check the zone 10 March calendar and what to plant now.
Finish Cool-Season Windows
Many cool-season crops opened about January 15 and close about March 30 (butterhead and some lettuce types closer to March 15). Keep sowing while windows fit:
- Greens: lettuce, spinach, arugula, kale, collards, Swiss chard, bok choy. Lettuce, spinach, kale.
- Roots: radish, beet, turnip, parsnip, carrot (carrot into early April). Radish, beet, carrot.
- Brassicas, peas, onions, cool herbs, and cover crops. Pea, broccoli.
- Fig spring planting closes about March 1. Asparagus closes about March 10. Fig tree, asparagus.
Keep Warm-Season Beds Going
Crops that opened about February 1 stay open through early April: asparagus (to March 10), cantaloupe, watermelon, eggplant, okra, sweet potato, cilantro, and many spring flowers. From about February 15: tomato, peppers, beans, squash, pumpkin, sweet corn, cucumbers, warm herbs, and summer flowers. Acorn and yellow summer squash opened about February 20. Tomato, bean, squash, cantaloupe.
March 1 Additions
From about March 1: basil, cucumber, marigold, pepper, and sunflower. Use these to fill remaining warm beds. Basil, cucumber, pepper.
Next Steps
Finish cool-season sowings before late March, keep tomatoes and peppers on schedule, and add March 1 herbs and flowers. Compare February zone 10, January zone 10, and March zone 9.