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Planting calendar for ZIP 95945 (Grass Valley, CA)

When to plant vegetables in Grass Valley, CA (USDA hardiness zone 9a). Typical last spring frost around Apr 10, 2026 (±17 days year to year), first fall frost around Nov 13, 2026 (±14 days).

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

See the full Grass Valley, 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 95945

Month by month in Grass Valley, CA

January

February

March

April

May

September

Understand your frost dates

Where these dates come from

Frost dates for ZIP 95945 come from NOAA 1991-2020 normals (USC00043573 GRASS VALLEY #2, 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.