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San Luis Obispo, CA planting calendar

When to plant vegetables in San Luis Obispo, CA (USDA hardiness zone 9b). Typical last spring frost around Jan 16, 2026 30 days year to year), first fall frost around Dec 25, 202631 days).

Playing it safe? Spring frost holds off until about Feb 23, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

Want exact dates for your address, a drag-and-drop bed layout, and reminders when it’s time to sow? Enter your ZIP:

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Still time to plant

As of today, these crops can still reach harvest before San Luis Obispo, CA’s first frost (~Dec 25, 2026) — fastest first.

Month by month in San Luis Obispo, CA

January

February

March

September

October

November

December

Understand your frost dates

Frost dates are NOAA 1991–2020 climate normals for a representative location in San Luis Obispo, CA (covering 4 ZIPs); your exact dates depend on your address. Schedules are guidance, not guarantees.