Blue Magnolia Rust Magic Mushrooms (Psilocybe Cubensis, Blue Magnolia Rust) is a newer, high potency strain that is still quite rare in the mushroom markets today. This rare strain was developed by isolating spores from a sample collected from a wild Mississippi strain in 2011 by mycologists Doc and Mycotek. Through many hours of research online it is told that this strain was originally found near a horse ranch, and found growing on wood chips and horse manure.