Rhododendron leaf damage - Ask Extension
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 t...
Knowledgebase
Rhododendron leaf damage #454804
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
Expert 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_...
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