On May 19, 2026, the Illinois Nature Preserves Commission approved the dedication of the Trout Hollow Hill Prairie as an Illinois Nature Preserve.
In Illinois, a Nature Preserve designation is the highest form of protection for a natural area. It permanently protects the prairie from development and provides a partnership with the State for long-term care and protection.
Since 1963, the Illinois Nature Preserves System has helped protect many of Illinois’ plants, animals, and ecosystems that would otherwise be lost forever. In fact, Illinois was the first state in the nation to create a program like this.
Trout Hollow was designated because of how rare prairies are today. Less than one percent remain in Illinois. It is also home to the endangered crested coralroot orchid. The flower was discovered in summer 2025, and it is now state’s northernmost known location.
This prairie was once at risk. It took nearly 800 people from 43 states and four countries to save it from development.
Now it has even greater protections, ensuring it will be there for generations to come.
The prairie has come a long way, and it still has miles to go. But for now, we celebrate this milestone.
Learn more about Trout Hollow Hill Prairie here.
Crested coralroot orchid by Chris Benda
