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Planting calendar for ZIP 48104 (Ann Arbor, MI)

When to plant vegetables in Ann Arbor, MI (USDA hardiness zone 6a). Typical last spring frost around May 5, 2026 11 days year to year), first fall frost around Oct 10, 202610 days).

Playing it safe? Spring frost holds off until about May 19, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Ann Arbor, MI planting calendar for dates typical of the whole city.

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Month by month in Ann Arbor, MI

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Understand your frost dates

Frost dates for ZIP 48104: NOAA 1991-2020 normals (USC00200228 ANN ARBOR SE, MI US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.