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Saint Helena, CA planting calendar

When to plant vegetables in Saint Helena, CA (USDA hardiness zone 9b). Typical last spring frost around Feb 3, 2026 29 days year to year), first fall frost around Dec 4, 202619 days).

Playing it safe? Spring frost holds off until about Mar 12, 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 Saint Helena, CA’s first frost (~Dec 4, 2026) — fastest first.

Month by month in Saint Helena, CA

January

February

March

September

November

December

Understand your frost dates

More California planting calendars

ZIP codes in Saint Helena

94574

Frost dates are NOAA 1991–2020 climate normals for a representative location in Saint Helena, CA (covering 1 ZIP); your exact dates depend on your address. Schedules are guidance, not guarantees.