GrowZone

Crop by USDA zone

When to plant tomatoes in zone 6b

In USDA zone 6b, plant tomatoes around May 7, after the representative last frost near Apr 30. Start seeds indoors around Mar 19.

This page summarizes the supported ZIPs in zone 6b. Your exact city can move earlier or later, so use the ZIP lookup for the frost-station-specific answer.

Get exact tomatoes dates by ZIP code.

Seed starting schedule

Tomatoes dates for Columbus, OH

StepDateHow to use it
Start IndoorsMarch 19, 2026Start seeds under lights or in a bright indoor seed-starting space.
Transplant OutdoorsMay 7, 2026Move hardened-off seedlings outside after the frost-risk window.
Columbus, OH · Zone 6b Tomatoes May 7 Open ZIP-specific answer · last frost Apr 30 Cleveland, OH · Zone 6b Tomatoes May 12 Open ZIP-specific answer · last frost May 5 Indianapolis, IN · Zone 6b Tomatoes May 2 Open ZIP-specific answer · last frost Apr 25 Detroit, MI · Zone 6b Tomatoes May 12 Open ZIP-specific answer · last frost May 5 Kansas City, MO · Zone 6b Tomatoes Apr 22 Open ZIP-specific answer · last frost Apr 15