Sure, you can cut them almost any time, as long as they are repeat bloomers.
If they only bloom once a year, than wait until their done for this year.

Jeff, Southeast Michigan, Zone 5


"MarkE" wrote in message
...
I live in california and the weather is moderate this year. My roses
have reached about 8 ft and I'm thinking it's time to cut them back,
but I'm not sure of what to do