For sale here is a 10mL liquid culture of Stropharia rugosoannulata cloned from specimens farmed in Portland, OR.
This is a delicious mushroom that loves gardens and landscaped areas. Building an outdoor bed is incredibly easy. Colonize grain spawn, inoculate sawdust/chips then spread straw (not hay) over the area you wish to build your bed. Spread spawn evenly across this surface and cover in wood chips. In 1-2 years you will have a bed that will continue to thrive so long as you keep adding food.
Photo credit: DB