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Planting calendar for ZIP 48748 (National City, MI)

When to plant vegetables in National City, MI (USDA hardiness zone 5b). Typical last spring frost around May 23, 2026 13 days year to year), first fall frost around Sep 26, 20269 days).

Playing it safe? Spring frost holds off until about Jun 8, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full National City, MI planting calendar for dates typical of the whole city.

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Month by month in National City, MI

February

March

April

May

June

July

August

Understand your frost dates

Frost dates for ZIP 48748: NOAA 1991-2020 normals (USC00203528 HALE 5SSW #2, MI US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.