You can find pholiota nameko in East Asian countries, primarily Japan. They often grow on dead or dying trees in forests during the autumn season. For cultivation, pholiota nameko spores are available, and they can be grown on supplemented hardwood sawdust. Additionally, pholiota nameko can sometimes be found fresh or canned in Asian supermarkets and specialty stores, or through online retailers that specialize in gourmet mushrooms.