Masters Mix Substrate

Masters Mix Substrate is a specially formulated mushroom growing substrate for growing gourmet edible mushrooms. Each bag contain 50% Oak and 50% Soy Hulls.  Oak is perfect for hardwood loving species and the soy hulls provide a rich Nitrogen composite that mushrooms crave.    is sterilized and ready to use from the box. Each grow bag comes with a  .05 µm filter patch to provide perfect fresh air exchange and filter out bacteria and other contaminants. We use the largest spawn bags available to insure plenty of room for substrate and the fruiting mushrooms.  This cultivation standard mix helps to speed up growth and maximize yield.  Cultivating in these mushroom grow bags you won't have to adjust humidity or worry about contaminants compromising your grow. This is beginner proven, with maximum yields. Media- Hardwood Mix Moisture Content- Hydrated to field capacity Bag Weight- 6-8 lbs  EASY TO USE Add 1 lb of colonized grain spawn for every 5 lbs of sterile substrate. Store the bag