Margins of leaves turn brown. Most likely to occur when trees are planted in full sun, following transplant, or when nutrient deficient. Dogwoods may be nutrient deficient in soils with pH above 7. See leaf scorch in General Problems table. Avoid planting dogwoods on exposed sites.
Leaves appear gray or white powdery on the surface.
Young leaves may be distorted. Seriously affected leaves may brown and die. Powdery mildews have become serious in some areas of the South, but serious levels have not been seen in Missouri. If you think you have seriously damaging levels of this disease, please submit a sample to the Extension Plant Disease Clinic. Common in wet seasons.