My failing roses are all budded hybrid teas. I don't know how old they are as many were given to me by my son when he was moving from the house where they had been growing for some years before he owned it. He didn't want to leave the roses behind but had no place for them. Unfortunately most are down to a single large cane. I just reread the rejuvenation thread and plan to give it a try. Thanks, Lyn.