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Planting calendar for ZIP 97345 (Foster, OR)

When to plant vegetables in Foster, OR (USDA hardiness zone 8b). Typical last spring frost around Apr 12, 2026 20 days year to year), first fall frost around Oct 28, 202618 days).

Playing it safe? Spring frost holds off until about May 7, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

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

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Month by month in Foster, OR

January

February

March

April

May

August

Understand your frost dates

Frost dates for ZIP 97345: NOAA 1991-2020 normals (USC00353047 FOSTER DAM, OR US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.