Black Lava Rock Volcanic Drainage Rock Succulents Bonsai Terrarium

Improve drainage, aeration, and root health withpremium black lava rock, a porous volcanic substrate ideal for potting mixes, drainage layers, bonsai, succulents, terrariums, and aquariums. Thishorticultural-grade lava rock is screened, washed, and dust-reduced for clean, consistent performance straight from the bag.