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Planting calendar for ZIP 95988 (Willows, CA)

When to plant vegetables in Willows, CA (USDA hardiness zone 9b). Typical last spring frost around Feb 21, 2026 37 days year to year), first fall frost around Dec 6, 202617 days).

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

See the full Willows, CA planting calendar for dates typical of the whole city.

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Month by month in Willows, CA

January

February

March

April

September

October

December

Understand your frost dates

Frost dates for ZIP 95988: NOAA 1991-2020 normals (USC00049699 WILLOWS 6 W, CA US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.