These shiitake mushrooms fruited on a log that was inoculated at least seven years ago and given to us as a gift. The Blue Oysters are from an outdoor bed that was started in a laundry basket on a substrate of wood chips, straw and hydrated hardwood fuel pellets.
The Oyster spawn originally came from Fungi Perfecti in the form of plugs. Before inoculating logs I propagated the mycelium from a couple of plugs on agar, then grain, then various bulk substrates.