Perlite Mushroom Substrate
Perlite is a porous volcanic rock used to create humidity in a fruiting chamber. Simply add water and the Perlite will slowly evaporate water evenly over a long time. We use a specific variety of Perlite that is 100% pure. Our Perlite bags contain no artificial plant food that is found in most kinds available at local stores. Perlite for mushrooms will keep them healthy and humid as they grow.
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