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Planting calendar for ZIP 59219 (Dagmar, MT)

When to plant vegetables in Dagmar, MT (USDA hardiness zone 3b). Typical last spring frost around May 16, 2026 10 days year to year), first fall frost around Sep 18, 20268 days).

Playing it safe? Spring frost holds off until about May 28, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Dagmar, MT planting calendar for dates typical of the whole city.

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Month by month in Dagmar, MT

February

March

April

May

June

July

Understand your frost dates

Frost dates for ZIP 59219: NOAA 1991-2020 normals (USC00245572 MEDICINE LAKE 3 SE, MT US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.