Damson leaf disease - Ask Extension
identify and suggest remedy
Knowledgebase
Damson leaf disease #267826
Asked August 05, 2015, 2:00 PM EDT
identify and suggest remedy
County
Expert Response
I can't say for sure, but it looks like you have mite galls on your leaf. These are mostly harmless and are cause by tiny insects laying eggs on the leaves. Read more about them here: http://www.extension.umn.edu/garden/insects/find/insect-and-mite-galls/