Blue Meanie mushrooms were initially discovered in Australia. The moniker “Blue Meanie” gained popularity in the 1970s through the Beatles’ film “Yellow Submarine,” where these mushrooms were portrayed as antagonists. Over time, the term has been broadly used to denote various strains of mushrooms exhibiting a blue hue.
Blue Meanie mushrooms belong to the Psilocybe cubensis species, recognized for their psychedelic properties. Their name is derived from the distinct blue coloration present in both the caps and stems, attributed to the presence of psilocin and psilocybin—two psychoactive compounds.