GrowZone

Crop by USDA zone

When to plant watermelon in zone 7a

In USDA zone 7a, plant watermelon around May 4, after the representative last frost near Apr 20. Start seeds indoors around Mar 30.

This page summarizes the supported ZIPs in zone 7a. Your exact city can move earlier or later, so use the ZIP lookup for the frost-station-specific answer.

Get exact watermelon dates by ZIP code.

Seed starting schedule

Watermelon dates for Wichita, KS

StepDateHow to use it
Start IndoorsMarch 30, 2026Start seeds under lights or in a bright indoor seed-starting space.
Transplant OutdoorsMay 4, 2026Move hardened-off seedlings outside after the frost-risk window.
Direct SowMay 4, 2026Sow seed outside when the crop and soil can handle the window.
Louisville, KY · Zone 7a Watermelon Apr 29 Open ZIP-specific answer · last frost Apr 15 Wichita, KS · Zone 7a Watermelon May 4 Open ZIP-specific answer · last frost Apr 20 Boston, MA · Zone 7a Watermelon May 4 Open ZIP-specific answer · last frost Apr 20