r/MushroomGrowers•7 mo. agoInside_Spite_3903[Actives] What is this on my petri dish?ActivesPosted Mar 5, 2026, 7:51 PM UTC2931ShareSave
![[Actives] What is this on my petri dish?](https://i.redd.it/pycny7ez6ang1.jpeg)