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Geyser, MT planting calendar

When to plant vegetables in Geyser, MT (USDA hardiness zone 4b). Typical last spring frost around May 25, 2026 14 days year to year), first fall frost around Sep 21, 202611 days).

Playing it safe? Spring frost holds off until about Jun 11, 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:

Or get a printable Geyser calendar and sowing reminders by email:

Still time to plant

As of today, these crops can still reach harvest before Geyser, MT’s first frost (~Sep 21, 2026) — fastest first.

Month by month in Geyser, MT

February

March

April

May

June

July

Understand your frost dates

More Montana planting calendars

ZIP codes in Geyser

59447

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