GrowZone

Crop by USDA zone

When to plant radishes in zone 9a

In USDA zone 9a, plant radishes around Feb 1, after the representative last frost near Mar 1.

This page summarizes the supported ZIPs in zone 9a. 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 Las Vegas, NV

StepDateHow to use it
Direct SowFebruary 1, 2026Sow seed outside when the crop and soil can handle the window.
Jacksonville, FL · Zone 9a Radishes Feb 1 Open ZIP-specific answer · last frost Mar 1 San Antonio, TX · Zone 9a Radishes Feb 1 Open ZIP-specific answer · last frost Mar 1 Las Vegas, NV · Zone 9a Radishes Feb 1 Open ZIP-specific answer · last frost Mar 1 Portland, OR · Zone 9a Radishes Mar 4 Open ZIP-specific answer · last frost Apr 1 Seattle, WA · Zone 9a Radishes Feb 20 Open ZIP-specific answer · last frost Mar 20