A Organ Pipe Cactus Wall: an elegant wall for a desert garden. This looks to be Organ Pipe Cactus (Lemaireocereus marinates) and a little research shows that it has often been used for natural fencing in the past. Someone else has commented that this is a Landscape Architecture, Landscape Design, Garden Design, Desert Landscape, Desert Plants, Desert Gardening, Cactus Y Suculentas, Cacti And Succulents, Cacti Garden