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Zone 1b planting calendar

When to start vegetables in USDA hardiness zone 1b. Typical last spring frost around May 29, 2026 13 days year to year), first fall frost around Aug 28, 202612 days). Based on 8 ZIP codes in the zone — exact dates vary by location.

Playing it safe? Spring frost holds off until about Jun 14, 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 1b calendar and sowing reminders by email:

Still time to plant

As of today, these crops can still reach harvest before zone 1b’s first frost (~Aug 28, 2026) — fastest first.

Month by month in zone 1b

February

March

April

May

June

July

Frost dates are NOAA 1991–2020 climate normals for a representative location (ZIP 99745) in zone 1b; your exact dates depend on your address. Schedules are guidance, not guarantees.