Sick dogwood

Asked July 2, 2019, 11:36 AM EDT

The leaves at the top half of my dogwood (about 10 years old) look shriveled and droopy. Attached is a photo of the entire tree, and close-ups of the top taken from a second story window. We would be grateful for a diagnosis and treatment suggestion.

Montgomery County Maryland disease issues powdery mildew dogwood tree

1 Response

Overall, the tree looks pretty good. The drooping on the leaves looks like powdery mildew, a fungal disease. The discoloration on the leaf backgrounds suggests mildew damage.

There is a range of susceptibility among dogwood to powdery mildew. The best recommendation is to plant powdery mildew resistant varieties in the future. Pruning for air circulation may help. You will have to monitor the plant in the future and decide if you want to spray fungicides or horticultural oil products listed for powdery mildew. This is time consuming and expensive. See more on our website https://extension.umd.edu/hgic/topics/powdery-mildew-trees-and-shrubs


Marian