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Planting calendar for ZIP 97064 (Vernonia, OR)

When to plant vegetables in Vernonia, OR (USDA hardiness zone 8a). Typical last spring frost around May 8, 2026 16 days year to year), first fall frost around Oct 1, 202618 days).

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

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

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Month by month in Vernonia, OR

February

March

April

May

June

July

Understand your frost dates

Frost dates for ZIP 97064: NOAA 1991-2020 normals (USC00358884 VERNONIA #2, OR US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.