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Planting calendar for ZIP 59318 (Brusett, MT)

When to plant vegetables in Brusett, MT (USDA hardiness zone 4b). Typical last spring frost around May 18, 2026 10 days year to year), first fall frost around Sep 20, 20269 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 Brusett, MT planting calendar for dates typical of the whole city.

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Month by month in Brusett, MT

February

March

April

May

June

July

Understand your frost dates

Frost dates for ZIP 59318: NOAA 1991-2020 normals (USW00094051 JORDAN AP, MT US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.