Rose Bush Leaf Problem
Hello. These holes are likely caused by 2 different insects. The smaller holes probably started out to be small brown spots and the center has fallen out. This is caused by the larvae of a sawfly, the rose slug. These insects have developed and moved on. The larger holes are from another insect-perhaps a slug or Japanese beetle- but you will need to see them in order to know for sure what it is. Sometimes it is helpful to go out after dark with a flashlight to see if it is an insect that is munching at night. I hope this helps.
Thank you Marcia L. :-)