If you’re cultivating dung-loving mushroom species, Spawn Magic CVG is the ideal bulk substrate. Formulated from a careful mix of CVG (coco coir, vermiculite, gypsum), this substrate is optimized for high moisture retention and airy structure. pH balanced with gypsum, hydrated to field capacity, and sterilized to be shelf stable, Spawn Magic CVG offers a nutrient-rich bulk substrate for monotubs and more.