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Planting calendar for ZIP 60516 (Downers Grove, IL)

When to plant vegetables in Downers Grove, IL (USDA hardiness zone 5b). Typical last spring frost around Apr 28, 2026 12 days year to year), first fall frost around Oct 16, 202611 days).

Playing it safe? Spring frost holds off until about May 13, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Downers Grove, IL planting calendar for dates typical of the whole city.

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Month by month in Downers Grove, IL

January

February

March

April

May

August

Understand your frost dates

Frost dates for ZIP 60516: NOAA 1991-2020 normals (USC00115097 LISLE-MORTON ARBORETUM, IL US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.