As soon as I saw that the Latin name for Branched Oyster mushroom was Pleurotus cornucopiae, I had to grow some. This is a widely sought after variety well known to mushroom foragers, as it has an enormous range in the wild, and in many locales, can be found all year. Once again, the substrate here is just used coffee grounds with their filters.
The container is the difference. That’s a one gallon glass canister that was made in the US, and costs the princely sum of ten bucks. If someone had set out to design the perfect mushroom growing container, they could have done no better. The lid is left cracked open slightly as the mycelium expands, removed daily for the water spritzing, and then replaced to maintain humidity.It obviously comes off permanently when the young shrooms reach the top of the container.
Commercial growers in this country use plastic grow bags, which like all plastics, end up in our enormous waste stream. The glass canisters, with proper treatment, could last for generations. As far as single use plastics go, just remember P.I.E.–Plastic Is Evil. Last week, for the first time, plastic microbeads were found in some dude’s bloodstream.