It's a great time to transplant roses in your location, Liz, because of the rain. I don't necessarily trim roses down when I transplant them from one container to another. The main thing is to keep them well watered, but we don't really have to worry about that during this season in California.
This is also a great time to prune roses in California. Yours are still young, and I usually don't prune roses in the conventional sense of the term for the first year I have them, but a light trim will give them added stimulus to grow. If your co-op roses grew to be as huge as a couple of mine did, however, you could cut off the top third of the long canes. I just did that yesterday to some of my roses from Charlene's co-op. The Buck roses didn't grow that much, but the Austins were reaching for the sky.
