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Planting calendar for ZIP 56357 (Oak Park, MN)

When to plant vegetables in Oak Park, MN (USDA hardiness zone 4b). Typical last spring frost around May 8, 2026 12 days year to year), first fall frost around Oct 1, 202611 days).

Playing it safe? Spring frost holds off until about May 23, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Oak Park, MN planting calendar for dates typical of the whole city.

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Month by month in Oak Park, MN

January

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March

April

May

June

July

August

Understand your frost dates

Frost dates for ZIP 56357: NOAA 1991-2020 normals (USC00215392 MILACA, MN US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.