"Big Mex is a genetic isolation of Mexican Cubensis (not Psilocybe Mexicana, which is a different species) originally done by Mr. G. In years since, several cultivators isolated traits like large fruits, fast colonization, and resistance to contamination. Caps are large and often flat in maturity with coloration ranging from light brown to golden reddish. Stems are usually slender but quite dense with heavy spore deposits coloring the stem and cap purplish-black after. This strain is reviewed as eliciting less anxiety during the onset/come-up than other mushroom strains, and is often described as a ""smooth, clean high with lots of visuals""."