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Planting calendar for ZIP 50140 (Lamoni, IA)

When to plant vegetables in Lamoni, IA (USDA hardiness zone 5b). Typical last spring frost around Apr 17, 2026 11 days year to year), first fall frost around Oct 21, 202611 days).

Playing it safe? Spring frost holds off until about May 1, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

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

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Month by month in Lamoni, IA

January

February

March

April

May

August

Understand your frost dates

Frost dates for ZIP 50140: NOAA 1991-2020 normals (USC00134585 LAMONI, IA US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.