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Portola Valley, CA planting calendar

When to plant vegetables in Portola Valley, CA (USDA hardiness zone 9b). Typical last spring frost around Feb 25, 2026 34 days year to year), first fall frost around Nov 25, 202618 days).

Playing it safe? Spring frost holds off until about Apr 9, 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:

Or get a printable Portola Valley calendar and sowing reminders by email:

Still time to plant

As of today, these crops can still reach harvest before Portola Valley, CA’s first frost (~Nov 25, 2026) — fastest first.

Month by month in Portola Valley, CA

January

February

March

April

September

December

Understand your frost dates

More California planting calendars

ZIP codes in Portola Valley

94028

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