Mescaline is a naturally occurring psychedelic found in several cactus species, most notably, Peyote (Lophophora williamsii) and San Pedro (Trichocereus pachanoi) native to northern Mexico and the southwest United States. Several other members of the trichocereus family also contain...

What is San Pedro? San Pedro cactus (Trichocereus pachanoi), otherwise known as the Cactus of the Four Winds, Huachuma or Saint Peter’s Cactus, is a fast growing columnar cactus native to the Andes Mountains – which can grow up to...