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Coleharbor, ND planting calendar

When to plant vegetables in Coleharbor, ND (USDA hardiness zone 4a). Typical last spring frost around May 10, 2026 10 days year to year), first fall frost around Sep 29, 20269 days).

Playing it safe? Spring frost holds off until about May 22, 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 Coleharbor calendar and sowing reminders by email:

Still time to plant

As of today, these crops can still reach harvest before Coleharbor, ND’s first frost (~Sep 29, 2026) — fastest first.

Month by month in Coleharbor, ND

January

February

March

April

May

June

July

August

Understand your frost dates

More North Dakota planting calendars

ZIP codes in Coleharbor

58531

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