I'm just learning about comfrey so a few questions. How does it improve the soil around fruit trees? Is is just leaving the leaves as they die for compost or does it do something else for the soil. My place is mostly woods but I have a garden, some fruit trees and a large grass area that I use for a burn pile as I clear trees and brush. I'm sure I can find some places to plant comfrey that I won't have to worry about it getting out of control. Would like to use some as compost greens, but does it help the fruit trees if I just leave it natural around them? I'm in zone 7b