Transform your plant collection with our 3/16" Black Cinder! This lava rock is the secret to thriving bonsai, succulents, and cacti. Mix it into your soil to create perfect drainage and root aeration that ordinary potting mixes don't provide. The rich black color makes an impressive top dressing that will make your potted plants stand out from the crowd choose the amendment that delivers both performance and beauty. This material comes in a 2.2 Liter / 2 Quart bag available now for shipping or local pickup!