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Planting calendar for ZIP 45051 (Mount Saint Joseph, OH)

When to plant vegetables in Mount Saint Joseph, OH (USDA hardiness zone 6b). Typical last spring frost around Apr 13, 2026 13 days year to year), first fall frost around Oct 31, 202611 days).

Playing it safe? Spring frost holds off until about Apr 29, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Mount Saint Joseph, OH planting calendar for dates typical of the whole city.

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Month by month in Mount Saint Joseph, OH

January

February

March

April

May

August

September

Understand your frost dates

Frost dates for ZIP 45051: NOAA 1991-2020 normals (USC00331550 CINCINNATI-FERNBANK, OH US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.