What Is Going On With My Knock Out Rose Bush?

Question

This started a little at the end of the year last year. I pruned the bushes back and they put out beautiful leaves. Within a few weeks it started again.

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Answer 1

This Looks a lot like rose slug damage. Most insecticides work well against them. Here is an article that will help:

https://www.gardeningknowhow.com/ornamental/flowers/roses/rose-slugs.htm