What is causing many small holes in the leaves of my roses?
My rose bushes are showing small holes in the leaves without any discoloration. I see no bugs or evidence of other disease. What is it and what can I do to prevent it? I see no evidence of black spot or any bugs, fungus or other common diseases. All nine bushes are new this year, healthy, and growing nicely. The holes are appearing on leaves now on all bushes, except the new growth, which is a healthy red coloring.
The small holes are likely from a night feeding insect. I recommend either spraying the rosebushes with a good insecticide of choice, or giving all of the rosebushes a treatment of Bayer Tree and Shrub granules.