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Planting calendar for ZIP 61818 (Cerro Gordo, IL)

When to plant vegetables in Cerro Gordo, IL (USDA hardiness zone 6a). Typical last spring frost around Apr 16, 2026 11 days year to year), first fall frost around Oct 22, 202611 days).

Playing it safe? Spring frost holds off until about Apr 30, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Cerro Gordo, IL planting calendar for dates typical of the whole city.

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Month by month in Cerro Gordo, IL

January

February

March

April

May

August

Understand your frost dates

Frost dates for ZIP 61818: NOAA 1991-2020 normals (USW00003887 DECATUR AP, IL US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.