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Zone 5b planting calendar

When to start vegetables in USDA hardiness zone 5b. Typical last spring frost around May 1, 2027 (±12 days year to year), first fall frost around Oct 13, 2027 (±10 days). Based on 2,951 ZIP codes in the zone — exact dates vary by location.

Playing it safe? Spring frost holds off until about May 16, 2027 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

Zone 5b covers a lot of ground. Enter your ZIP for frost dates from your nearest weather station and a month-by-month calendar:

Month by month in zone 5b

January

February

March

April

May

August

Exact indoor-sow, transplant, and direct-sow windows for zone 5b’s most-planted vegetables.

Where these dates come from

Frost dates for zone 5bare NOAA 1991–2020 climate normals from a representative location (ZIP 53187). A hardiness zone spans thousands of miles, so no single station speaks for all of it. The guide to zones and frost dates covers what that means for your timing.

Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.