Our live liquid mushroom cultures are lab procured from the finest commercial samples in the world. Each culture is tested and guaranteed 100% contaminate free. Each syringe contains a proven high-output isolated sub-strain for maximum yield and minimum incubation time. Each purchase includes a sterile individually packaged hypodermic needle. Portobello Mushroom Agaricus bisporus is an edible basidiomycete mushroom native to grasslands in Europe and North America. It has two color states while immature ? white and brown ? both of which have various names, with additional names for the mature state. A. bisporus is cultivated in more than seventy countries, and is one of the most commonly and widely consumed mushrooms in the world. Environment Information Incubation Temp: 86? F Incubation Humidity: 80%-83% Incubation Time: 10 Days Fruiting Temp: 72-78? F Fruiting Humidity: 93%-96% Fruiting Time: 14 Days