Soil Retention is the inventor, producer and installer of Plantable concrete systems®, including Verdura®, a fully plantable ... retaining wall system; Drivable Grass®, a permeable, flexible and plantable concrete pavement system; Drivable Turf®, a pre-cut artificial turf infill option for Drivable Grass®; and Enviroflex®, a tapered, vertically interlocking articulating concrete block (ACB) revetment system. read more