You can’t get any closer to the natural soil for lophophora species as with this growing mix.
This Peyote soil mix consists of Dolomite / clay / sand and vulcanix pumice (Bimskies, Bims). There is almost no organic substance in this soil. The soil is slightly alkaline (pH over 7) and the drainage is optimal.
A perfect soil with all the essential elements needed to successfully grow lophophora, Ariocarpus and many other species of cactus.