If you know what this shrub is called, I would love to know. Also, when and how much can I prune it. We have only lived here for a few years and it has doubled in width. It's at least 15 feet wide and it has a twin back there on the other side of the yard. They are starting to take over. My instinct tells me to wait until Spring to prune so it doesn't try to send out tender new growth before winter hits. Am I correct? How much could I safely prune it back? That's another important question. I don't want to kill these two monsters. Just rein them back in. Any suggestions?