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Abiotic and Biotic Stressors

Community Tree Care Series
View from the ground looking up to a tall tree filled with green leaves.
Event Date(s)
Event Time
-
Location
Online
Event Fee
$10.00

Tree stress and failure can stem from many factors. 

Don’t be hasty to blame insects or diseases for your tree problems. Many tree stresses stem from abiotic or non-living factors such as environmental conditions, poor selection, or improper planting. This session will delve into these often-overlooked abiotic causes of tree stress and failure. But when should biotic or living stressors be considered? Presenters will guide you through disease diagnosis and introduce attendees to some notable tree diseases and insects currently affecting trees in Illinois. 

Presenters: Chris Enroth, Extension horticulture educator, and Justin Vozzo, Extension forestry specialist

About the Community Tree Care Series

The hybrid tree care series is a training opportunity for individuals performing tree care work and looking to build on their knowledge. Topics range from tree basics to identification, health assessment, and pruning techniques. 

Participants include certified arborists as well as public and private tree care professionals, municipal or county groundskeeping staff, community volunteers, and anyone interested in expanding their tree care knowledge. This training provides information and resources for communities to ensure proper tree care, minimize the risk of hazardous trees, and promote healthy community forests.

The hybrid model provides two forms of training, which offer online webinars and in-person workshops. First are six winter webinar sessions from 9 to 10:30 a.m., spanning two Wednesdays a month from January through March. Each webinar covers two main topics per date. The cost is $10 for general access to all sessions and $50 for those seeking Continued Education Units for access to all sessions. Registration is required, and individuals can attend one, some, or all sessions.

One hour of CEUs is available per session to Illinois Arborist Association certified arborists who qualify. During registration, please specify attendance as a certified professional seeking CEUs.

New this year — each webinar session will conclude with a discussion of tree health issues based on attendee-submitted photos. The activity will allow time for skill building, discussion, and learning from each other using relevant examples of things happening to trees throughout the state. See registration links for information on submitting photos. 

Additional Series Sessions

Workshop Sessions

The second training opportunity includes in-person tree care workshops in the fall of 2025. The exact dates, locations, and registration will be available to participants following the webinar sessions.

If you need a reasonable accommodation to participate, please contact