Possibly you have seen this odd condition on your oaks. Sometimes the symptoms are very severe. Other times only one side of the tree is affected. Regardless, it usually causes some grower concern.
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Rachel Leisso* and Brian Hudelson, UW-Madison Plant Pathology
Tatters is a leaf disorder affecting primarily members of the white oak group of oaks (i.e., oaks with leaves with rounded lobes) inclu READ MORE http://hort.uwex.edu/articles/tatters