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When to plant sweet corn in Zone 7a

In Zone 7a, direct-sow around April 15 – April 29.

Your sweet corn timeline — Zone 7a

Direct-sowApril 15 – April 29
Zone 7a last frost~04/15
Zone 7a first frost~10/26
Direct-sow when soil warms to 60°F (after the last frost). [src]Cited: University of New Hampshire Cooperative Extension — “Growing Vegetables: When to Plant Your Vegetable Garden”

Dates computed from Zone 7a's median NOAA frost normals and the cited rule. Your town may differ by a week or two — check your exact ZIP.

What you'll need

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Last verified 2026-07-16. Frost: NOAA NCEI 1991–2020. Zone: USDA 2023. Rule: University of New Hampshire Cooperative Extension — “Growing Vegetables: When to Plant Your Vegetable Garden”; UGA Extension (days to maturity).

Sweet Corn in other zones

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