Hi Susan ...
Sorry I couldn't respond earlier. I had to go over the mountain for a dentist appointment. Not fun.
The orange spots you describe does sound like a fungal disease called "rust", but I have a feeling that the roses are probably showing more disease symptoms because they are stressed.
Your photos did not enlarge for me either.
If you do know the name of the roses, that is a good starting point because it gives us an idea of how large a mature plant would be. Also, could you tell us how closely you planted them together ? Sue may be onto something when she mentioned root competition.
