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Growing sawdust spawn with your kit


Instead of using your kit in the usual way to produce mushrooms directly, you could choose to multiply the grain spawn in the kit into a much larger quantity of sawdust spawn, and in turn use that to inoculate a larger quantity of bulk substrate. To do that just omit the coffee grounds and take special care to avoid contamination. The mycelium will still tend to start fruiting in about 10 days, so plan to use the spawn before that starts. It will make about 5 lbs of spawn, about a gallon in volume, which can inoculate 8-10 times its weight in new substrate.