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Planting calendar for ZIP 49781 (Saint Ignace, MI)

When to plant vegetables in Saint Ignace, MI (USDA hardiness zone 5b). Typical last spring frost around May 16, 2026 11 days year to year), first fall frost around Oct 13, 202612 days).

Playing it safe? Spring frost holds off until about May 30, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Saint Ignace, MI planting calendar for dates typical of the whole city.

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Month by month in Saint Ignace, MI

February

March

April

May

June

July

August

Understand your frost dates

Frost dates for ZIP 49781: NOAA 1991-2020 normals (USC00207275 ST IGNACE, MI US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.