Dealing with neighbor's rose bush roots
I have a community garden plot 2 feet from a fence. The home owner on the other side has rose bushes that are out of control, and the roots are all the way under my garden plot, stealing the water and nutrients.
I'd like to 'redirect' the roots to grow elsewhere. And I am not sure of the best way to do that.
First I have to cut them off. Would a trencher shovel be easy enough for the job? Can that cut through rose bush roots fairly well?
Can I put something down in the trench to discourage future growth in my direction, like a sheet of plywood or sheet metal?
I'm not a yard work expert by any means. So i can use all of the help/ideas you have.