They grow mostly on rotting wood, right. I've eaten wild oyster mushrooms and didn't think they were that tasty. There weren't a lot of different mushrooms growing where we lived at that time, but there were inky caps, and I much preferred them to the oyster mushrooms. I have seen places that sell two or three species of inky cap spawn. For some reason I didn't see that they were selling morel spawn. If they had been I would have bought some of that, cause they are the king of the hill, top of the heap as far as mushrooms go.