rose virgin needs help identifying illness in knockouts
In the last week or so my previously healthy and thriving sunny knockouts have taken a turn for the worst. The Leaves have begun to yellow, brown, and dry up. There are some large holes in some of the leaves, but the most troubling are the tiny dots (see picture) scattered about nearly all of the leaves. The blooms are still mostly healthy and the stalks appear to be healthy as well. Our recent temperatures have been rather high (in the 90s) with some intermittent rain and our house faces south so the bushes get sun all day long. I have been using a spray for pests on the bushes for about a month. Any ideas or thoughts on what could be happening with my babies?