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Los Altos, CA planting calendar

When to plant vegetables in Los Altos, CA (USDA hardiness zone 9b). Typical last spring frost around Jan 6, 2026 20 days year to year), first fall frost around Dec 23, 202617 days).

Playing it safe? Spring frost holds off until about Jan 31, 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 Los Altos, CA’s first frost (~Dec 23, 2026) — fastest first.

Month by month in Los Altos, CA

January

February

October

November

December

Understand your frost dates

Frost dates are NOAA 1991–2020 climate normals for a representative location in Los Altos, CA (covering 2 ZIPs); your exact dates depend on your address. Schedules are guidance, not guarantees.