Mushroom contamination is the single biggest reason beginner grows fail — and most of it is preventable once you know what you're looking at. Green, black, pink, orange and yellow patches all mean different things, and responding correctly depends on identifying the contaminant accurately. Trichoderma is the most common offender; wet rot and bacterial blotch are the most frequently misdiagnosed. This article covers all ten contaminants you're realistically likely to encounter, with a visu … read more