GrowZone

Crop by USDA zone

When to plant lettuce in zone 10a

In USDA zone 10a, plant lettuce around Jan 18, after the representative last frost near Feb 1. Start seeds indoors around Jan 4.

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 lettuce dates by ZIP code.

Seed starting schedule

Lettuce dates for Oakland, CA

StepDateHow to use it
Start IndoorsJanuary 4, 2026Start seeds under lights or in a bright indoor seed-starting space.
Transplant OutdoorsJanuary 18, 2026Move hardened-off seedlings outside after the frost-risk window.
Direct SowJanuary 18, 2026Sow seed outside when the crop and soil can handle the window.
Tampa, FL · Zone 10a Lettuce Jan 18 Open ZIP-specific answer · last frost Feb 1 Phoenix, AZ · Zone 10a Lettuce Jan 22 Open ZIP-specific answer · last frost Feb 5 Mesa, AZ · Zone 10a Lettuce Jan 22 Open ZIP-specific answer · last frost Feb 5 San Francisco, CA · Zone 10a Lettuce Jan 11 Open ZIP-specific answer · last frost Jan 25 Oakland, CA · Zone 10a Lettuce Jan 18 Open ZIP-specific answer · last frost Feb 1