Hello, I have a row of several American Boxwoods in my yard in (about 7 years old) and both last year and this year have noticed "cupping" of the leaves. After some research I have determined this to be cause by psyllids. If this is true, I have also read it is really too late for me to treat this summer, but should prepared to do so in early May of next year.
The questions I have are: 1). Based on my description, would you agree that what I am seeing is indeed caused by psyllids? 2) Is it too late to treat for this year? 3) When I do treat for these pests, what do you suggest I use? Please provide both a natural and chemical insecticide recommendation. Thanks so much!! Mary