Rhododendron leaf damage

Asked May 17, 2018, 4:04 PM EDT

Damage spreading from 1 bush to the next, Also seems to kill the buds, It Started last summer, & is picking up speed this spring. Does not seem to affect native rhododendrons.

Baltimore County Maryland

1 Response

Our plant pathologist looked at your photos. This looks like the decline of older leaves, not a disease. This symptom also occurs because of winter injury (which affects all types of broadleaf evergreens). Winter injury can also damage developing buds. Eventually, these leaves will drop out and new growth will develop later this spring. https://extension.umd.edu/sites/extension.umd.edu/files/_images/programs/hgic/Publications/HG51_IPM_...