The patents are held by Terry Farms and vigorously defended by them. Still, at last report, no one has been able to produce morels by the instructions in the patent. Terry Farms has recently opened a morel production facility in Auburn, Alabama. Some of our advertisers sell morel spawn with instructions for creating a small outdoor patch. This works, sometimes, but it is certainly not a sure thing and don't expect commercial yields.
Oysters grow rapidly and can out-compete most contaminants.
They can grow on most hardwoods as well as straw and many agricultural wastes. The Westen Montana Mycological Society has a web page that outlines the very easiest way to get these mushrooms started in your backyard. Mycorrhizal Mushrooms Mycorrhizal mushrooms grow in a symbiotic relationship with plants, typically trees. The extreme complexities of these relationships make these mushrooms almost impossible to cultivate away from trees. In fact, no one has found commercially viable ways to grow any of these species indoors.