GrowZone

Crop by USDA zone

When to plant spinach in zone 9b

In USDA zone 9b, plant spinach around Jan 23, 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 spinach dates by ZIP code.

Seed starting schedule

Spinach dates for Houston, TX

StepDateHow to use it
Direct SowJanuary 23, 2026Sow seed outside when the crop and soil can handle the window.
New Orleans, LA · Zone 9b Spinach Jan 13 Open ZIP-specific answer · last frost Feb 10 Houston, TX · Zone 9b Spinach Jan 23 Open ZIP-specific answer · last frost Feb 20 Tucson, AZ · Zone 9b Spinach Jan 18 Open ZIP-specific answer · last frost Feb 15 Bakersfield, CA · Zone 9b Spinach Jan 23 Open ZIP-specific answer · last frost Feb 20 Fresno, CA · Zone 9b Spinach Jan 23 Open ZIP-specific answer · last frost Feb 20 San Jose, CA · Zone 9b Spinach Jan 18 Open ZIP-specific answer · last frost Feb 15 Sacramento, CA · Zone 9b Spinach Jan 23 Open ZIP-specific answer · last frost Feb 20