All mushroom culivators have been there. You see a blue/green mold (usually trichoderma fungi) growing on your mushroom media. Trichoderma fungi show up in our petri plates, liquid culutre, grain spawn, bulk substrates and pretty much anywhere else that it can. While farmers dread it, it's actually a wonderful fungi for the ecosystem. This world would not be the same without it.

A great way to combat contaminiation is to undersatd it better, and that's what our good friend Larry Evans has done for us in this video. Learn about trichoderma, try to find respect and you will have a better time in your battles with this pervasive fungus.