A mixture of red wiggler worm castings and activated biochar. Red wigglers castings are made from diverted organic food wasted from local businesses. It is rich with organic matter, nutrients, and other factors that improves soil health and plant growth. The biochar acts like a sponge that retains nutrients, houses beneficial microbial and fungal life, and stores water so that your plants require less watering and less feeding. The combination of the worm casting and biochar unlocks a powerful soil recipe that is inspired by "Terra Preta": a very dark, fertile, soil that was created by the indigenous Amazonians.