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Zone 12b planting calendar

When to start vegetables in USDA hardiness zone 12b. Typical last spring frost around Apr 12, 2026 (±26 days year to year), first fall frost around Dec 1, 2026 (±23 days). Based on 44 ZIP codes in the zone — exact dates vary by location.

Playing it safe? Spring frost holds off until about May 15, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

Zone 12b covers a lot of ground. Enter your ZIP for frost dates from your nearest weather station and a month-by-month calendar:

Still time to plant

As of today, these crops can still reach harvest before zone 12b’s first frost (~Dec 1, 2026) — fastest first.

Month by month in zone 12b

January

February

March

April

May

September

Exact indoor-sow, transplant, and direct-sow windows for zone 12b’s most-planted vegetables.

Where these dates come from

Frost dates for zone 12bare NOAA 1991–2020 climate normals from a representative location (ZIP 96710). A hardiness zone spans thousands of miles, so no single station speaks for all of it. The guide to zones and frost dates covers what that means for your timing.

Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.