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What to plant in September in Zone 9a

In September, Zone 9a gardeners can sow for fall harvest — 6 crops have a planting task this month.

Zone 9a frost: last ~03/02, first ~11/25. Dates computed from these and cited extension rules. For your exact town, use the ZIP tool.

Sow for fall harvest

CauliflowerSow for fall harvestKaleSow for fall harvestSpinachSow for fall harvestTurnipsSow for fall harvestBeetsSow for fall harvestPeasSow for fall harvest

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Last verified 2026-08-28. Frost: NOAA NCEI 1991–2020. Zone: USDA 2023. Rules: UNH Extension, Johnny's, UGA Extension.