GrowZone

Crop by USDA zone

When to plant radishes in zone 10b

In USDA zone 10b, plant radishes around Dec 23, after the representative last frost near Jan 20.

This page summarizes the supported ZIPs in zone 10b. 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 Anaheim, CA

StepDateHow to use it
Direct SowDecember 23, 2025Sow seed outside when the crop and soil can handle the window.