Hello;\n My neighbor has a beautiful old Brazilian Pepper tree close to lot line. On my side there is a row of what I would call volunteers which have been allowed to grow for several years. I want t get rid of them - OK with neighbor. Plan is to kill with RoundUP and then cut down.\nQUESTION - Are these from seeds or could they be root connected to neighbor's tree? If connected, I probably don't want to kill with RoundUP - correct?\nThanks!