I live in the Pacific Northwest with a very wet climate. I'm wondering what kind of Mulch I should use in the Spring. I have a Heather plant that says on the tag to use peat moss in it; and I have a groundcover (the name is at home and I'm at work right now) that is recommended to have all sorts of ingredients including Peat moss. But I'm not sure that peat moss is the right ingredient for our climate. Any ideas?