GrowZone

Crop by USDA zone

When to plant spinach in zone 10a

In USDA zone 10a, plant spinach around Jan 4, after the representative last frost near Feb 1.

This page summarizes the supported ZIPs in zone 10a. 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 Oakland, CA

StepDateHow to use it
Direct SowJanuary 4, 2026Sow seed outside when the crop and soil can handle the window.
Tampa, FL · Zone 10a Spinach Jan 4 Open ZIP-specific answer · last frost Feb 1 Phoenix, AZ · Zone 10a Spinach Jan 8 Open ZIP-specific answer · last frost Feb 5 Mesa, AZ · Zone 10a Spinach Jan 8 Open ZIP-specific answer · last frost Feb 5 San Francisco, CA · Zone 10a Spinach Dec 28 Open ZIP-specific answer · last frost Jan 25 Oakland, CA · Zone 10a Spinach Jan 4 Open ZIP-specific answer · last frost Feb 1