(NOT MY COMMENT, BUT FUNNY!!!!) Contained bamboo... I want this and will do the neighborly thing and contain it, although part of me wouldn't mind if it spread next door and choked them in their sleep.
Create a Backyard Getaway: Ensure Privacy. Your outdoor room will feel more like an oasis if it has a sense of enclosure. Fences and garden walls ensure privacy for patios, but you can also use lattice, pergolas, and landscaping to define outdoor spaces and screen views of neighboring houses.