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From: San Antonio, TX
Region: Southwest
Topic: Diseases and Disorders, Trees
Title: Small oak tree with powdery mildew in San Antonio, TX.
Answered by: Jimmy Mills
Almost all landscapes have plants that become diseased with one of the powdery mildews. These two fact sheets describe the disease and its cause, and give tips for prevention and control.
Ohio State University
Colorado State University
Although the powdery mildew is unsightly, it probably won’t kill your oak tree.
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