This premium potting mix by Sybotanica has everything your bonsai plants need.

Bonsai can be delicate plants that need the best quality care available to thrive. The bonsai mix should not get hard when dry and have a good amount of aeration and drainage. The addition of pumice & perlite supplies this.

The lava rock helps with the structure of the roots and weighs them down, stopping your bonsai from getting top-heavy.