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Planting calendar for ZIP 93402 (Los Osos, CA)

When to plant vegetables in Los Osos, CA (USDA hardiness zone 10a). Typical last spring frost around Jan 19, 2026 16 days year to year), first fall frost around Jan 14, 202618 days).

Playing it safe? Spring frost holds off until about Feb 8, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

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

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Month by month in Los Osos, CA

January

February

October

November

December

Understand your frost dates

Frost dates for ZIP 93402: NOAA 1991-2020 normals (USC00045866 MORRO BAY FIRE DEPT, CA US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.