Many wild mushrooms, such as oyster, shiitake, and trumpet, are grown on farms and are wild in name only. The commercially raised versions retain the same unfettered mushroom flavor as their counterparts that grow in the wild. Look for the varieties of wild mushrooms at your local supermarket. Some of these may be found either fresh or dried. Many varieties in the wild -- including some that appear identical to familiar edible types -- are poisonous and can be harmful, even fatal, to eat. Buying wild mushrooms at a supermarket ensures you'll get only ones that are safe to eat.