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Diseases of Deciduous Trees: Oak - Oak Wilt

Initial symptoms of oak wilt appear in the upper canopy of the tree. Wilting (drought-like) leaves turn yellow and then brown. Photo courtesy of University of Minnesota Plant Pathology Department.

Wilting leaves with yellow margins. The veins may remain green for a longer period of time.
Photo courtesy of University of Minnesota Plant Disease Clinic.

 

Oak wilt symptoms may mimic drought stress.
Photo courtesy of University of Minnesota Plant Pathology Department.

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Last modified on March 07, 2013