White stuff on young tree

Asked June 21, 2017, 1:04 PM EDT

Hi, This does not look good! What is it and what do I do about it? Thanks! Ruhl

Anne Arundel County Maryland disease issues powdery mildew

1 Response

This looks like powdery mildew, a fungal disease. You could treat the tree with horticultural oil labeled for powdery mildew control. Rake up and dispose of any fallen, infected leaves. When you water the tree, water it only at the base, to avoid wetting the leaves.

Here is additional information about powdery mildew on shrubs, and how to manage it:
https://extension.umd.edu/hgic/powdery-mildew-trees-and-shrubs

ckc