My lengthy hedge of pyramid cedars appears to be under attack from moths. Left untreated I believe this can damage the cedars to the point of killing them. What should I spray the cedars with in order to get rid of the moths?
You may have fall webworms, Hyphantria cunea. Unsightly but usually not fatal to the tree. You might try pruning out the affected branches before resorting to insecticides. Give us a photo of the infestation for diagnosis and advice.
