Psilocybe fanaticus thanks its popularity due to the fact that it colonizes fast en therefore fruits earlier than most other cubensis. The P. fanaticus is a must try for all beginning and experienced mycologists.
PF is the original strain that made the PF TEK cultivation method big. Even though PF it is Psilocybe cubensis, over the years fanatics decided to give the PF its own name. Because of the very meaty stems that P. fanaticus produces, PFO is jokingly known as Teonanácatl 2.0