I have a tall weed that is just starting to flower. It pulls out really easy. I have been battleing it for 5 years. The weeds must be 12 feet tall right now. My neighbor likes the privacy the weeds provide him. I on the other hand am really frustrated by these weeds. My latest thought is to pull the few perenials out and mow the area for a few years. I hired someone to tend to this area once-they used round up, tilled it but by late summer the weeds were all back. Can anyone help me out with a solution. The weeds are in my little grove of black walnuts and black cherry trees. The walnuts must be keeping good things from growing!