Because you live in SoCal, you will have to force your roses into a dormancy by pulling off any leaves left after you prune. When I lived in a warmer climate, I pruned my roses in November and pulled all their leaves then.
Without dormancy, the life expectancy of the rose will be less.
https://www.google.com/url?sa=...
I hope this link works. I'm on my tablet and attachments are tricky.
