What is covering the leaves on shrub
I cannot identify nor correct something spreading all over the leaves of my shrubs and small maple and dogwood trees. It appears to have started on one shrub (do not know identity), as it is covering ever leaf, then the trees on either side have the same things growing, but on sporadic leaves throughout. All trees and shrubs less than 5 years old.
Thank you so much!
Kindly
Christine
Wright County Minnesota galls maple leaf galls
2 Responses
These are galls probably caused by a mite. There is not really anything you can do until spring. The insect is inside the gall and is protected from any insecticide. This spring I would spray with the shrubs with horticultural oil to kill the mites when they become active.
Here is a reference to galls:
http://apps.extension.umn.edu/garden/diagnose/plant/deciduous/maple/leavesgrowths.html
Most grateful! Thank You