State guide
Wisconsin Nature Guide
Wisconsin sits where three great natural regions overlap: the northern conifer-hardwood forest of the lakes country, the tallgrass prairie and oak savanna of the south, and the rugged, unglaciated Driftless Area in the southwest. Bounded by Lake Superior and Lake Michigan and laced with cattail marshes, kettle lakes, and trout streams, the state runs a sharp cold-continental calendar across USDA zones 3b to 6a — a long hard winter, a brief explosive spring, an intense green summer, and a sugar-maple and tamarack fall color season that rolls south from the Apostle Islands to the Illinois line.
Every month in Wisconsin
Explore by subject
The whole year
Wisconsin Nature Year 2027
Everything Birch Compass knows about a year of nature in one state — the book, the posters, the sky calendar, the life list, and a weekly note through 2027.