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Planting calendar for ZIP 93401 (San Luis Obispo, CA)

When to plant vegetables in San Luis Obispo, CA (USDA hardiness zone 9b). Typical last spring frost around Jan 31, 2026 29 days year to year), first fall frost around Dec 11, 202621 days).

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

See the full San Luis Obispo, CA planting calendar for dates typical of the whole city.

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Month by month in San Luis Obispo, CA

January

February

March

September

October

November

December

Understand your frost dates

Frost dates for ZIP 93401: NOAA 1991-2020 normals (USW00093206 SAN LUIS OBISPO AP, CA US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.