No, you may not. You have to use the potting compost prepared by Funghi Mara, which is composed of 4/7 peat, 2/7 very small gravels and 1/7 calcium carbonate. All these elements have to be mixed together properly ( general p.h. must be between 7.2 and 7.4 ).
Champignons d'intérêt: Champignon de Paris, champignon de couche, Champignon Portobello
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