Add a layer of lava rocks for superior root aeration and proper water drainage for the optimal health of your bonsai tree. This will protect your plant from root rot. Highly recommended for both tropical plants and succulents. Made from porous volcanic pumice. No fillers and all natural.

Volume: Small: 2.5oz Large: 23.3oz

1 Large bag = 9.5 Small bags; that's 4 bags free!