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Planting calendar for ZIP 52621 (Crawfordsville, IA)

When to plant vegetables in Crawfordsville, IA (USDA hardiness zone 5b). Typical last spring frost around Apr 26, 2026 12 days year to year), first fall frost around Oct 10, 202611 days).

Playing it safe? Spring frost holds off until about May 11, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Crawfordsville, IA planting calendar for dates typical of the whole city.

Want exact dates for your address, a drag-and-drop bed layout, and reminders when it’s time to sow? Enter your ZIP:

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Month by month in Crawfordsville, IA

January

February

March

April

May

July

August

Understand your frost dates

Frost dates for ZIP 52621: NOAA 1991-2020 normals (USC00131731 COLUMBUS JUNCTION, IA US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.