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The Fall 2025 TreeKeepers Course registration is now open! More information on registration and scholarship opportunities below!
Become a TreeKeeper & Help Protect the Urban Forest
The TreeKeepers certification course, which Openlands began in 1991, has trained over 2,000 volunteers to conserve, protect, and advocate for the region’s urban forest. To become certified as a TreeKeeper, participants must complete the course requirements listed below and pledge to volunteer after graduation. Once certified, TreeKeepers can host volunteer workdays, attend advanced trainings, and work in a local chapter to advance community forestry goals.
Becoming a TreeKeeper can be an entry way to:
- Understand the environmental community in the Chicago region
- Learn how trees can help mitigate the impacts of climate change
- Meet and connect with many of the organizations doing “green” work
- Join a respected and frequently requested group of educated volunteers
- A new career
The Openlands TreeKeepers certification course takes place three times a year in Chicago as well as in the suburbs. One of the three courses each year is offered in Spanish.
TreeKeepers Information
The TreeKeepers Course and Requirements
The TreeKeepers Course includes classroom and field components. Lessons are taught by industry experts. Some of the topics covered include tree biology, soils, tree ID, pruning, planting, mulching, working with volunteers, advocacy, and pests and diseases.
To become certified as a TreeKeeper, course participants must complete the following requirements:
- Attend all classes (missed classes may be made up at a subsequent course)
- Pass a written exam (80% passing)
- Complete practical exams on tree planting, mulching, and pruning
- Pledge 25 volunteer hours within the year following graduation
- Have fun while learning about the urban forest!
The English language certification course costs $150, with a limited number of scholarships available. The tuition includes a TreeKeepers Program Manual, safety glasses, and upon graduation, a TreeKeepers certificate, TreeKeepers lanyard, badge, and t-shirt. The Spanish language certification course is currently offered at no cost.
