Skip to main content

Planting calendar for ZIP 53545 (Janesville, WI)

When to plant vegetables in Janesville, WI (USDA hardiness zone 5b). Typical last spring frost around Apr 26, 2026 11 days year to year), first fall frost around Oct 15, 202610 days).

Playing it safe? Spring frost holds off until about May 10, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Janesville, WI planting calendar for dates typical of the whole city.

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 ZIP 53545 calendar and sowing reminders by email:

Month by month in Janesville, WI

January

February

March

April

May

August

Understand your frost dates

Frost dates for ZIP 53545: NOAA 1991-2020 normals (USC00470045 AFTON - JANESVILLE WWTP, WI US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.