Our premium biochar is sustainable made in the PNW! Biochar is an amazingly beneficial soil amendment. Benefits include: -vitamins & nutrient infusion -fast root growth -reduced risk of root rot due to moisture wicking -purifying & cleansing effect Our biochar is very low dust and the perfect size for terrariums as well! Mix 1 part biochar to 9 parts soil for the perfect blend. Each bag contains 1 quart by volume.