Invasive Species I (Online and In-Person)

Learn to identify and manage the most common invasive plants in the Great Lakes region.  Managing invasive plants is one of the most common restoration tasks. Learn to identify the characteristics of common invasive plants and describe their impacts on the landscape; discuss invasive plant ecology, and learn to which control methods are best suited to each plant. The online and in-person sessions complement each other; please plan to complete the class materials online before coming to the field session. This class can be taken as a component of the Woodland Stewardship Program in natural areas management.

Instructor: Mary Zaander, Witness Tree Native Landscapes
Notes: Held online, indoors, and outdoors. Limit 20
Requirements: Must have access to the internet and provide an email address at registration.  Must know how to use a web browser (ex: Chrome, Safari, Internet Explorer) and how to send and receive email. You will be expected to complete the online portion of the course before you arrive for the in-person session. Plan to spend about 90 minutes completing the online material. Students will have access to the online materials for 60 days after the first day they access the course.
Prerequisites: Basic Plant ID (W100) or previous experience with plant identification recommended.
Continuing education: This class fulfills a requirement for the Woodland Stewardship Program.


Course number


Schedule and Location

Registration closes 11:59 p.m., Thursday, May 10, 2018
Online component begins: Friday, May 11, 2018
In-person component: Saturday, May 19, 2018,  9:00 a.m. to 12:30 p.m.
Thornhill Education Center


Registration opens Tuesday, February 20, 2018

Fees and Admission

Nonmembers: Fees include admission to the Arboretum. 

$29.00 members
$34.00 nonmembers

Registration Information

BY PHONE: 630-719-2468 (or to be waitlisted, M-F, 9:00 a.m. to 4:00 p.m.)
IN PERSON: Stop by Visitor Center during open hours.

Weather Cancellation Hotline
Classes run rain or shine unless there is a threat of server weather. If severe weather is forecast please call 630-719-7979 for updates on weather related cancellations.