Choose from a variety of mulch types, such as cedar, hardwood, or rubber mulch

https://www.scribd.com/document/878566832/The-Importance-of-Quality-Retaining-Wall-Blocks-for-Erosion-Control-210817

Choose from a variety of mulch types, such as cedar, hardwood, or rubber mulch, to retain moisture in your soil while adding visual interest to your landscape.