I like to leave my lavender alone during the winter (and I live in CO) because I like the structure of it. In spring, I cut it about 2/3 back. You don't have to cut it back though and can just cut out any dead branches that remain after all the leaves have flushed out. Of course, living in BC, you may have a different variety of lavender than I am growing. I hope I have helped somewhat!
10/20/09 at 12:29am