The changeable agaric mushroom (Kuehneromyces mutabilis, synonym Pholiota mutabilis) is a popular mushroom among mushroom collectors. It mostly grows on tree stumps. The tasty mushrooms grow on logs in thick bunches which often appear around the log just where it is buried in the soil. Each log can normally be harvested several times a year. We have been able to harvest the changeable agaric mushroom at all times of the year.