GrowZone

Crop by USDA zone

When to plant kale in zone 9b

In USDA zone 9b, plant kale around Feb 6, after the representative last frost near Feb 20. Start seeds indoors around Jan 16.

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 kale dates by ZIP code.

Seed starting schedule

Kale dates for Houston, TX

StepDateHow to use it
Start IndoorsJanuary 16, 2026Start seeds under lights or in a bright indoor seed-starting space.
Transplant OutdoorsFebruary 6, 2026Move hardened-off seedlings outside after the frost-risk window.
Direct SowJanuary 30, 2026Sow seed outside when the crop and soil can handle the window.
New Orleans, LA · Zone 9b Kale Jan 27 Open ZIP-specific answer · last frost Feb 10 Houston, TX · Zone 9b Kale Feb 6 Open ZIP-specific answer · last frost Feb 20 Tucson, AZ · Zone 9b Kale Feb 1 Open ZIP-specific answer · last frost Feb 15 Bakersfield, CA · Zone 9b Kale Feb 6 Open ZIP-specific answer · last frost Feb 20 Fresno, CA · Zone 9b Kale Feb 6 Open ZIP-specific answer · last frost Feb 20 San Jose, CA · Zone 9b Kale Feb 1 Open ZIP-specific answer · last frost Feb 15 Sacramento, CA · Zone 9b Kale Feb 6 Open ZIP-specific answer · last frost Feb 20