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Planting calendar for ZIP 97830 (Fossil, OR)

When to plant vegetables in Fossil, OR (USDA hardiness zone 7a). Typical last spring frost around Jun 3, 2026 20 days year to year), first fall frost around Sep 14, 202615 days).

Playing it safe? Spring frost holds off until about Jun 28, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Fossil, OR planting calendar for dates typical of the whole city.

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Month by month in Fossil, OR

March

April

May

June

July

Understand your frost dates

Frost dates for ZIP 97830: NOAA 1991-2020 normals (USC00353038 FOSSIL, OR US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.