Dakota Hardscape Supply, long known to contractors, landscape installers and do-it-yourselfers as Dakota Aggregate Resources, began in 1999. Our mission today is as simple as ever: to provide a quality product at a great price. Dakota Hardscape Supply offers landscape rock, flagstone, stone edging, specialty stone, boulders, outcropping, stone steps, mulch, retaining walls, wall-building stone, stone pavers, land development and management, and more.