Mushrooms only thrive in specific conditions and are notoriously difficult to grow. For starters, they do not grow in ordinary garden soil, as they require a substrate, underlying substance, or layer. Used coffee grounds make a great substrate because they are packed full of nutrients that mushrooms like to grow on. What’s more, they have already been sterilized during the brewing process, which would otherwise be an extra step in the growing process. Procedure · Collect about 5.5 pounds (2.5 kg) of grounds and moisten them using a spray bottle. · Add a little over 1 pound (500 grams) of mushroom spore and sawdust mixture and mix well. You can look for this product at your local gardening store. · Place the resulting mixture into a filter patch grow bag, large freezer bag, or bucket and fill until approximately one-half to two-thirds full. · Cut four air holes, about 5 mm in size, into the sides of your container above the grounds. If you are using an open c