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Planting calendar for ZIP 50651 (La Porte City, IA)

When to plant vegetables in La Porte City, IA (USDA hardiness zone 5a). Typical last spring frost around May 3, 2026 10 days year to year), first fall frost around Oct 3, 202610 days).

Playing it safe? Spring frost holds off until about May 15, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full La Porte City, IA planting calendar for dates typical of the whole city.

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Month by month in La Porte City, IA

January

February

March

April

May

July

August

Understand your frost dates

Frost dates for ZIP 50651: NOAA 1991-2020 normals (USC00138568 VINTON, IA US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.