I'm about to toss some chopped up baby bellas into a pot with compost and stick it in a shady bit of my yard. I don't have the patience for actual mushroom cultivation but if this works I'll be stoked. Mushrooms grow in the wild.
Discussion
Lol that might work! It definitely works with Turkey tails and wine caps.
You might get lucky.
Depending on where you live though, the likelihood of those taking is fairly low.
However, as long as you don’t live in the southwest; king stropharia (sp?) aka wine cap mushrooms are a super easy low cost option that doesn’t require anything special to cultivate.
You can buy sawdust spawn in fairly large quantities and inoculate a mulch bed now and (assuming the right conditions in your area) have a flush of very large edible mushrooms by late spring through fall.