Kurtz Bros., Inc. is a Patented by Cornell University's Research Foundation, CU-Structural Soil ®, or CU-Soil™, is a patented, stone-soil-Gelscape® Tackifier urban tree mix that can safely support pavements and sidewalks. Providing ample rooting area allows street tree roots to grow freely through the soil. It withstands the compaction necessary to provide pavement stability for sidewalks, planting locations next to city roads and pedestrian malls, while allowing urban tree growth and vigor. CU-Soil dramatically decreases tree mortality and sidewalk failure.
Find out more information here.