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Planting calendar for ZIP 50103 (Garden Grove, IA)

When to plant vegetables in Garden Grove, IA (USDA hardiness zone 5b). Typical last spring frost around Apr 30, 2026 11 days year to year), first fall frost around Oct 8, 202610 days).

Playing it safe? Spring frost holds off until about May 14, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

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

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Month by month in Garden Grove, IA

January

February

March

April

May

July

August

Understand your frost dates

Frost dates for ZIP 50103: NOAA 1991-2020 normals (USC00134758 LEON 6 ESE, IA US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.