Planting calendar

When to plant sweet corn

Sweet corn are a warm-season crop you sow straight into the ground. Find your USDA zone in the table for the dates. In zone 7, sow around April 22.

Sweet corn: spring planting dates by zone
USDA zone Start seeds indoors Sow / transplant outside
Zone 3 — May 22
Zone 4 — May 17
Zone 5 — May 7
Zone 6 — April 28
Zone 7 — April 22
Zone 8 — April 4
Zone 9 — March 7
Zone 10 — February 7

Anchored to approximate zone last-frost dates. A guide — confirm locally.

FAQ

When should I plant sweet corn?

Sweet corn are a warm crop you direct sow. In zone 7 that's around April 22; the table shows every zone. Cool crops can go before the last frost, warm crops after.

Can I start sweet corn earlier in a warm zone?

Yes — warmer zones have an earlier last frost, so the dates shift earlier. Compare the zones in the table; a zone 9 garden plants weeks ahead of zone 5.

Other crops

When to plant tomatoesWhen to plant peppersWhen to plant eggplantWhen to plant broccoliWhen to plant cabbageWhen to plant bush beansWhen to plant cucumberWhen to plant squash & zucchini All crops & zones

A planting guide, not a guarantee. Dates anchor to approximate average last-frost dates per USDA zone and will shift with your microclimate and the season. Check the local forecast before planting.