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Grassy Butte, ND planting calendar

When to plant vegetables in Grassy Butte, ND (USDA hardiness zone 4a). Typical last spring frost around May 18, 2026 10 days year to year), first fall frost around Sep 23, 202610 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.

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 Grassy Butte, ND’s first frost (~Sep 23, 2026) — fastest first.

Month by month in Grassy Butte, ND

February

March

April

May

June

July

Understand your frost dates

More North Dakota planting calendars

ZIP codes in Grassy Butte

58634

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