GrowZone

Crop by USDA zone

When to plant cilantro in zone 12b

In USDA zone 12b, plant cilantro around Dec 18, after the representative last frost near Jan 1.

This page summarizes the supported ZIPs in zone 12b. 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 Honolulu, HI

StepDateHow to use it
Direct SowDecember 18, 2025Sow seed outside when the crop and soil can handle the window.
Honolulu, HI · Zone 12b Cilantro Dec 18 Open ZIP-specific answer · last frost Jan 1