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Planting calendar for ZIP 95946 (Penn Valley, CA)

When to plant vegetables in Penn Valley, CA (USDA hardiness zone 9b). Typical last spring frost around Apr 10, 2026 17 days year to year), first fall frost around Nov 13, 202614 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 Penn Valley, CA planting calendar for dates typical of the whole city.

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Month by month in Penn Valley, CA

January

February

March

April

May

August

September

Understand your frost dates

Frost dates for ZIP 95946: NOAA 1991-2020 normals (USC00043573 GRASS VALLEY #2, CA US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.