The Garden Wizard Self Watering 4 ft. Stone Landscape Border Wall is a single 50 in. wall section that can be used in a variety of ways to create striking landscaping borders. The walls can also hold water which can be distributed to a bordering garden via a specially designed soaker hose. If you've ever had to build a rock wall border or edging, then you understand how difficult a task it is. Now you don't have to struggle with heavy, cumbersome, expensive, decorative bricks.