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CUES: Center for Urban Ecology and Sustainability


Diseases of Deciduous Trees: Elm - Bacterial Wetwood

Bacterial ooze, consisting of bacteria and plant sap, flows out of the tree as a result of internal pressure. Photo courtesy of University of Minnesota Department of Plant Pathology.

Discoloration of the outer bark caused by bacterial ooze. Photo courtesy of University of Minnesota Plant Disease Clinic.

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Last modified on March 07, 2013