Pepper Jackson, Aldo Leopold, Jim Hale, and Mary Ellen Helgren after a controlled prairie burn at the Arboretum, ca. 1945. Photo: Aldo Leopold Foundation/UW–Madison Archives
Feature story
Ninety Years of Research Shape the Arboretum’s Future
Tuesday, September 1, 2026
In fall 1935, Norman Fassett, a botanist and UW–Madison professor, led a series of excursions to southern Wisconsin prairie remnants. John Thomson, a botany graduate student at the time, noted…
