One of the rarer strains, coming from the Thai island Koh Samui which is enriched with a lot of vegetation and waterfalls. This strain was found by ethnomycologist John Allen.
These spores fruit, grow and colonize fast. The mushrooms will not grow very tall but do get quite thick. Psilocybe cubensis Koh Samui is very resistant to contaminants and makes an excellent choice for beginners.
Thanks to these capacities the strain has recently gained enormous popularity.