I am very interested in a permamulch around and in my flower beds, except for the irises. My main problem is quackgrass creeping in from around the beds. I try to keep a border trench cultivated but whenever I let down my guard it comes back in. I am also a bit worried about carry over of pests from chop and drop type of culture, although this is pretty much what I do now! And comfrey was planted to use for permamulch, but it likes to go everywhere and now I am trying to get rid of it. HELP! What are the best books to read on this subject?
