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Zone 10B Vegetable Planting Calendar

When can you plant in Zone 10B? In Zone 10B, outdoor sowing opens with cool-season crops like Lettuce and Spinach in January, and warm-season crops like Tomato carry the summer. With little to no frost, Zone 10B grows nearly year-round — summer heat is the real gate. The calendar below scores all 35 crops month by month.

Scored per crop from your zone's frost dates, each crop's days-to-maturity, and typical soil temperatures — honestly, including when not to plant.

A zone caveat: USDA zones reflect winter lows, not summer heat — this calendar is a zone-level guide. For timing tuned to your exact zip code, sun, and soil, get your free AI garden plan.

Last frost

~rare / none

First frost

~rare / none

When to Start Seeds Indoors vs. Direct Sow in Zone 10B

Zone 10B rarely sees frost, so timing runs off heat and season length instead: transplant crops still benefit from an indoor head start, and direct-sow crops go straight into the bed. Every crop's method is below.

Planting a fall garden? Count the indoor weeks back from your transplant date instead of the spring frost — the free AI plan's prep runway computes that per plant, including hardening-off days.

Zone 10B Planting FAQ