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Planting calendar for ZIP 95139 (San Jose, CA)

When to plant vegetables in San Jose, CA (USDA hardiness zone 9b). Typical last spring frost around Feb 2, 2026 (±29 days year to year), first fall frost around Dec 6, 2026 (±20 days).

Playing it safe? Spring frost holds off until about Mar 11, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full San Jose, CA planting calendar for dates typical of the whole city.

Turn these dates into a plan: lay out your beds, place each crop on its sow and transplant dates, and get a reminder when it’s time. Free on one garden, no credit card.

Plan my garden for 95139

Month by month in San Jose, CA

January

February

March

September

November

December

Understand your frost dates

Where these dates come from

Frost dates for ZIP 95139 come from NOAA 1991-2020 normals (USC00045123 LOS GATOS, CA US). You can look up that station’s record yourself.

Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.