I thought it would be good to post common types of contamination you can come across when cultivating mushrooms, and some pictures of them, so people can become more familiar with them and recognize them if they occur. Wet Spot; Sour Rot - Bacillus sp. Bacteria blotch - Pseudomonas tolaasii on Psilocybe cubensis Cobweb mold or Dactylium Mildew (Hypomyces sp.) Cobweb mold on Psilcybe cubensis pins This will happen to your mushrooms if you allow it to mature: Green Mold - Trichoderma harzianum, T. viride, T. koningii Good batch next to a green mold infected batch: Lipstick Mold- Sporendonema purpurescens and Pink Mold; Red Bread Mold Lipstick mold: Pink Mold or Red Bread Mold: Blue-green Molds- Penicillium sp. In grain jars: what it will look like on the inside: Black Mold - Aspergillus sp. Pin Molds - Rhizopus sp. Hope this helps out! This Presentation Brought To You By Fry. Stay Fryed Myco-Tek!