Leaf Roller Worm
I think I have identified the nest in my Japanese Hollies as a leaf roller. I asked a question last week and I couldn't locate the worm that the expert told me about, but I found a worm and it is 1/2 inch long, light green with a brown head. That one was identified as a leaf roller as far as I could determine. I am going to spray with Spinosyn A and Spinosaid D. Not sure of the spelling. I have cut out the badly infested branches and will spray when it is warm next week. I guess my question is, how can I prevent this infestation next spring? Can I spray with dormant oil next November, like apple trees.? I know they are not native and if it will always be a problem, could you suggest another plant that is native or at least heartier, not susceptable to diseases or insects. A narrow screening plant that will fit into a narrow space along a fence? Linda K.
Washington County Oregon