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Planting calendar for ZIP 97536 (Prospect, OR)

When to plant vegetables in Prospect, OR (USDA hardiness zone 8a). Typical last spring frost around May 19, 2026 16 days year to year), first fall frost around Oct 3, 202614 days).

Playing it safe? Spring frost holds off until about Jun 8, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

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

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Month by month in Prospect, OR

February

March

April

May

June

July

August

Understand your frost dates

Frost dates for ZIP 97536: NOAA 1991-2020 normals (USC00356907 PROSPECT 2 SW, OR US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.