 Crystal Wilson's small garden beds and animal pens sprawl off both sides of a dirt drive on the side of a ridge in Rockford, south of Knoxville. She's been gardening and tending the herbs in her forest floor here for a quarter century. Wilson grew up in southwest Virginia learning about wild plants on long walks with her father, who was a factory worker. Her grandparents made extra money gathering plants to sell at an herb house in Marion.