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Planting calendar for ZIP 54127 (Green Valley, WI)

When to plant vegetables in Green Valley, WI (USDA hardiness zone 4b). Typical last spring frost around May 14, 2026 11 days year to year), first fall frost around Oct 1, 202610 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 Green Valley, WI planting calendar for dates typical of the whole city.

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Month by month in Green Valley, WI

February

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April

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June

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August

Understand your frost dates

Frost dates for ZIP 54127: NOAA 1991-2020 normals (USC00478376 SURING, WI US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.