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South Heart, ND planting calendar

When to plant vegetables in South Heart, ND (USDA hardiness zone 4b). Typical last spring frost around May 18, 2026 10 days year to year), first fall frost around Sep 25, 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:

Or get a printable South Heart calendar and sowing reminders by email:

Still time to plant

As of today, these crops can still reach harvest before South Heart, ND’s first frost (~Sep 25, 2026) — fastest first.

Month by month in South Heart, ND

February

March

April

May

June

July

August

Understand your frost dates

More North Dakota planting calendars

ZIP codes in South Heart

58655

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