When you're much too late selecting the mushrooms, they're going to drop their spores. The cake as well as the mushrooms will switch black/purple (A few other cubensis strains purple/brown) due to the spores. You can harvest your mushrooms correct before the membranes at the bottom of the cap begin https://getsocialsource.com/story3780617/the-basic-principles-of-best-microdosing-strains-europe