GrowZone

Crop by USDA zone

When to plant cilantro in zone 9b

In USDA zone 9b, plant cilantro around Feb 6, after the representative last frost near Feb 20.

This page summarizes the supported ZIPs in zone 9b. Your exact city can move earlier or later, so use the ZIP lookup for the frost-station-specific answer.

Get exact cilantro dates by ZIP code.

Seed starting schedule

Cilantro dates for Houston, TX

StepDateHow to use it
Direct SowFebruary 6, 2026Sow seed outside when the crop and soil can handle the window.