Prairies in summer are at the peak of their bloom and color, with hundreds of species of wildflowers and grasses showing their distinctive beauty. Increase the number of plants you can confidently identify, and begin to learn the specialized features and vocabulary to identify challenging groups such as the aster family, as well as the grasses, rushes, and sedges in this advanced plant ID course.
This workshop consists of an intensive, hands-on approach to identifying prairie plants in the field. We’ll discuss their ecology, point out key features and distinctions, and practice identifying species using keys. This class is held entirely outdoors. Come prepared to walk on uneven terrain.
This is an advanced program; foundational plant identification knowledge and skills are required.
This program meets in person at the Arboretum.
Instructor: Nathanael Pilla, botanist and ecologist, Midwest Biological Survey
Continuing education: This class fulfills a requirement for the Natural Areas Conservation Training (N-ACT) Program.
Age: 16 and older
Course number: S320
Instructor
Nathanael Pilla, botanist and ecologist, Midwest Biological Survey
Nathanael Pilla is a charismatic botanist who is experienced in botanical research and identification, has trained and led wetland restoration crews, interns, and volunteers, and is broadly engaged in environmental outreach and stewardship. Previously with Orbis Environmental Consulting, he currently leads his own environmental consulting company, Midwest Biological Survey. Pilla also serves on the Chicago Wilderness Steering Committee and is an adjunct professor at the University of Notre Dame. He recently co-authored the book Wildflowers of the Indiana Dunes National Park, published through Indiana University Press. When he is not botanizing, he spends his time writing and singing ridiculous songs.
What to Know
This is an advanced program; foundational plant identification knowledge and skills are required.
This program meets indoors and outdoors. Check the forecast and dress for the weather.
Wear comfortable, sturdy shoes and plan to walk more than a mile on uneven terrain.
Wear long sleeves and pants, sun protection, close-toed shoes with good traction, and rain gear if needed.
Bring a sack lunch, snack, and water. Sunscreen and insect repellent may come in handy.
Your favorite field guide and a hand lens will be useful.
See Education Program Policies for information about cancellations, refunds, and scholarships.
Continuing Education
This class fulfills a requirement for the Natural Areas Conservation Training (N-ACT) Program.
Program Schedule
Thursday, August 20, 2026, 9:00 a.m. to 4:00 p.m.
Thornhill Education Center (parking lot P-21), West Side
