Are they mites? We had a problem with something eating our leaves and roses last year and was told it was mites, but I never seen them.
We were told to hose them all down twice a day with a strong stream of water and it would knock the mites off the plants. It must have worked because a little over a week later, they all started looking better.
Looks like aphids, and they will harm the roses. They suck the sap out of the plants. You can blast them off with a water hose, or some soap and water.
Definitely looks like aphids to me. Thanks @Colonel K0rn Read about using all natural soap and water to kill them then blasting with the hose to get the larvae after an hour.
Bonus got to use my new hand pump sprayer for the first time and it worked well.
Those are definitely aphids. I was never able to keep them out of my square foot garden for the few years that I had it. Good luck. I didn't know they liked roses. I know they love peas.
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