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Grand Portage, MN planting calendar

When to plant vegetables in Grand Portage, MN (USDA hardiness zone 4b). Typical last spring frost around May 24, 2026 11 days year to year), first fall frost around Sep 29, 20269 days).

Playing it safe? Spring frost holds off until about Jun 7, 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 Grand Portage calendar and sowing reminders by email:

Still time to plant

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

Month by month in Grand Portage, MN

February

March

April

May

June

July

August

Understand your frost dates

More Minnesota planting calendars

ZIP codes in Grand Portage

55605

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