...have no idea how or if to prune. WA? I live in Washington State and have never done anything outside but mow the grass. I bought a new home and put half my back yard into flowers and shrubs and trees, now I have no idea how to maintain it. Do I cut low-growing and medium height flowers back, do I need to trim flowering shrubs and other shrubs, etc. and my biggest question of all -- if so, WHEN do I do it?

I live in NH. I know some things about when to cut back. I cut all my perenial flowers back after the first frost. ornamental grasses you cut back the begining of spring. Roses also. I don't believe you cut back shrubs you just prune in the spring.