That old expression; "great walls make great neighbors" is more true today thanks to a much more "neighborly" twist. The great, living walls of today are lush with plants and vines to dazzle the senses. With an abundance of wall space yet shortage of open land, gardeners are looking up. Living walls are not only beautiful, but also one of the newest and hottest trends in gardening. With urban sprawl and diminishing green space, living walls are the perfect link to adding new life and beauty in an ever-growing concrete jungle.