Quikrete .5cf Bag Red Lava Rock 77/PL

These versatile Quikrete Lava Rocks are an eye-catching and functional addition to a lawn or garden. Their porous nature helps them slow landscape erosion by retaining water inside. Many gardeners also use them to help filter the water in small backyard ponds and rain catchment systems, as they're useful for allowing good bacteria to grow and bad bacteria to drain away. These decorative lava rocks can also help to regulate garden water flow.