Skip to Content

Support MinnPost

MNopedia

Entries about Minnesota history from MNopedia are made available through a partnership with the Minnesota Historical Society and with funding from the Legacy Amendment's Arts and Cultural Heritage Fund.

Each week, MinnPost brings you a highlight of our state's past from MNopedia, an encyclopedia of Minnesota history written by experts and produced by the Minnesota Historical Society.

Arts amendment logoMNopedia is made possible with funding from the Legacy Amendment's Arts and Cultural Heritage Fund.

A disappearing ecosystem: Minnesota’s oak savannas

Oak savannas — open grassland studded by tall, spreading oak trees — once covered 10 percent of Minnesota.