9.7lb Mix Horticultural Lava Rock Pebbles-Decorative Landscaping Gritty Rocks,Pumice Potting Soil Amendment,Additive for Succulent,Cactus Bonsai,Vase Fillers,Terrarium,Fairy Gardening,Top Dressing.Brand: OUPENG Color: Bonsai Gritty Mix Features: Ideal Drainage Faster Draining Blend, No Root Rot. Adding porous lava rocks instead of mulch to maintain plants such as orchids, succulents, cacti, and bonsai trees. The porosity of lava rocks allows for excellent drainage while maintaining moisture within soil and also supply the necessary nutrition for plants growing. Potted soil additivesPre wash with no artificial fillers or colors. Lava Rock Soil