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Radersburg, MT planting calendar

When to plant vegetables in Radersburg, MT (USDA hardiness zone 4b). Typical last spring frost around May 19, 2026 10 days year to year), first fall frost around Sep 19, 202611 days).

Playing it safe? Spring frost holds off until about May 31, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

Want exact dates for your address, a drag-and-drop bed layout, and reminders when it’s time to sow? Enter your ZIP:

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Still time to plant

As of today, these crops can still reach harvest before Radersburg, MT’s first frost (~Sep 19, 2026) — fastest first.

Month by month in Radersburg, MT

February

March

April

May

June

July

Understand your frost dates

More Montana planting calendars

ZIP codes in Radersburg

59641

Frost dates are NOAA 1991–2020 climate normals for a representative location in Radersburg, MT (covering 1 ZIP); your exact dates depend on your address. Schedules are guidance, not guarantees.