From Old Irish, Arsa meaning ancient. According to the National Library of Medicine, the first gilled mushroom fossil was recorded to be from 14-21 million years ago. Mycelium is the underground network started from spores dropped from mushrooms. It forms hyphae which eventually turn into more mushrooms! 
Our MissionIt is our mission at Àrsa Mycelium to supply the best possible product to our customer’s and to educate as many as possible about the benefits of mushrooms! Mushrooms have been shown to possess profound benefits to our psyche, health, and even our environment. We strive to help others understand and utilize these benefits, while having the smallest carbon footprint possible.
Steve M.
“My order arrived quickly and I was very impressed with the quality”
August 2023
M.O.
“Amazing customer service”
September 2023
Brandon S.
“Perfect samples for my first microscopy experience”
December 2023
Lauren W.
“Their Shiitake genetics are awesome”
March 2024