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CUES: Center for Urban Ecology and Sustainability

Eutypella canker on maple. Photo courtesy of University of Minnesota Plant Disease Clinic.

Elliptical canker with large callus ridge produced at the advancing margin. Photo courtesy of Robert Blanchette.

Cankers weaken trees making them susceptible to wind throw. Cankered trees should be considered as a hazard tree.
Photo courtesy of University of Minnesota Plant Disease Clinic.

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Last modified on February 06, 2007