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What to plant in August in Zone 4b

In August, Zone 4b gardeners can sow for fall harvest — 2 crops have a planting task this month.

Zone 4b frost: last ~05/10, first ~09/30. Dates computed from these and cited extension rules. For your exact town, use the ZIP tool.

Sow for fall harvest

SpinachSow for fall harvestRadishesSow for fall harvest

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Last verified 2026-07-16. Frost: NOAA NCEI 1991–2020. Zone: USDA 2023. Rules: UNH Extension, Johnny's, UGA Extension.