Mushroom compost really is magic for your garden because it is filled with mycelium, the underground fungal web that helps plants absorb nutrients and communicate with other plants. * Improves soil structure * Promotes vigorous root growth and nutrient uptake * Loosens and aerates heavy soils while helping sandy soils retain moisture This compost is a by-product of edible mushroom farming and doesn't contain actual magic, mushrooms, or magic mushrooms.