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Planting calendar for ZIP 95140 (Mount Hamilton, CA)

When to plant vegetables in Mount Hamilton, CA (USDA hardiness zone 9b). Typical last spring frost around May 3, 2026 (±23 days year to year), first fall frost around Nov 18, 2026 (±20 days).

Playing it safe? Spring frost holds off until about Jun 1, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Mount Hamilton, 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 95140

Month by month in Mount Hamilton, CA

February

March

April

May

June

September

Understand your frost dates

Where these dates come from

Frost dates for ZIP 95140 come from NOAA 1991-2020 normals (USC00045933 MT HAMILTON, 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.