The stuff one can find out about things on Google!
The 3rd link has some organic controls listed.

Here is a link that might be useful: Flea Beetles on Google

Thanks - I read all that I could earlier today, but felt it was worth asking my fellow rosarians about their experience. I could not find any info online about whether there were beneficials that would be harmed by nematodes. The local extension office didn't know much about it, either.

Cheers,
Michelle

I read on the Colorado University site that your state has many types, each specific to certain crops.
There seemed to be no beneficials but there were suggestions on plantings that would attract them away from wanted plants, such as Chinese mustard, and certain radishes.

Yeah, I wonder which species does roses? I used to have plenty of them before the groundhogs made me give up vegetable gardening, but I've never notiiced a single pinhole on a rosebush. I don't recall anyone else reporting the problem on the forums, either. Per Karl's suggestion, mustard might make an OK annual foliage plant, big ruffled leaves, but I think it would bolt in the summer.

I don't know which species. They seem to devour the petals. The foliage looks fine (except for the June 7 freeze damage)! I will try to post photos later.

Cheers,
Michelle