I purchased my very small home 5 years ago with a very large magnolia tree in the front yard- I'd say its about 50-60 ft. tall. Unfortunately (for me) magnolia's are all about the superficial root system, so 1/2 of my front yard is a weedy, rooty, not-grassy mess. Now, i'm all about 'natural' landscaping, but even i feel that something must be done! I don't feel that i can cut down a healthy tree that has been around longer than my half century old neighborhood, but i can't quite figure out what to do with the situation. I've considered building a stone ring around the tree, but have heard that might not be best for the tree. Any thoughts or other suggestions?