September 8, 2026

Tree Talk Tuesday - Galls and Gall Makers of Ohio

Webinar

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Time: 12:00 PM - 1:00 PM ET

Description: This talk will cover basic biology and identification of gall-forming organisms that can be found in Ohio. Dr. Frey will also share a few ecological stories about the interactions between galls and other organisms, as well as humans.

Presenter: Dr. Tim Frey is a Post-Doctoral Researcher at The Ohio State University, in the Department of Plant Pathology, where I studied plant-associated microbes and their interactions. I am an admin of gallformers.org, a database of North American gall-forming organisms. I am a curator on iNaturalist.org, where I have identified over 100,000 observations, mostly of gall-forming organisms.

ISA CEUs: 1.0 Certified Arborist,  Urban Forest Professional, Utility Worker, Tree Worker, BCMA Science

Tree Talk Tuesday Webinars are live; recordings are not available after the webinar.