Skip to main content

Zone 4a planting calendar

When to start vegetables in USDA hardiness zone 4a. Typical last spring frost around May 12, 2026 11 days year to year), first fall frost around Oct 3, 20269 days). Based on 824 ZIP codes in the zone — exact dates vary by location.

Playing it safe? Spring frost holds off until about May 26, 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 4a calendar and sowing reminders by email:

Still time to plant

As of today, these crops can still reach harvest before zone 4a’s first frost (~Oct 3, 2026) — fastest first.

Month by month in zone 4a

February

March

April

May

June

July

August

Frost dates are NOAA 1991–2020 climate normals for a representative location (Stanton, ND) in zone 4a; your exact dates depend on your address. Schedules are guidance, not guarantees.