I looks a lot like Knock Out to me.

Agree with Seil, Knock Out. It can get very large, 6' x 4', but you can keep it trimmed back to be a bit smaller.

Thanks! I agree. This thing is getting huge, as you predicted.

I gave one to a friend that had over-shadowed three of it's neighbors. I trimmed it back to about three feet and had to put a rope around it to get it in the trunk of my car. Later her daughter kept telling her there was a monster outside her window. When she looked it was the Knockout. I went to look at it a few years later and it was well over 7 feet tall and was even bigger around! Upon closer look, she had never planted it. She only sat the pot on the ground until she could decide where to put it. The pot was split wide open and the main cane was bigger around than my arm. regardless to say, that rose is not being moved. LOL

Even here, on the north side of the yard next door, Knock Out grew to five feet. The cherry red color that glows on overcast days, that is Knock Out.