GrowZone

Crop by USDA zone

When to plant radishes in zone 6b

In USDA zone 6b, plant radishes around Apr 2, after the representative last frost near Apr 30.

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 radishes dates by ZIP code.

Seed starting schedule

Radishes dates for Columbus, OH

StepDateHow to use it
Direct SowApril 2, 2026Sow seed outside when the crop and soil can handle the window.
Columbus, OH · Zone 6b Radishes Apr 2 Open ZIP-specific answer · last frost Apr 30 Cleveland, OH · Zone 6b Radishes Apr 7 Open ZIP-specific answer · last frost May 5 Indianapolis, IN · Zone 6b Radishes Mar 28 Open ZIP-specific answer · last frost Apr 25 Detroit, MI · Zone 6b Radishes Apr 7 Open ZIP-specific answer · last frost May 5 Kansas City, MO · Zone 6b Radishes Mar 18 Open ZIP-specific answer · last frost Apr 15