What is wrong with my Knockout Roses?
The leaves have tiny holes in them. Is something eating them? What can I do?
The tiny holes are likely caused by some small beetles that poke holes in the leaves to such out juices for their survival. Spraying the roses with a good insecticide should take care of the problem, use the least harsh insecticide first, like a Safer brand and move up if need be. The holes will not disappear but should stop being present.