Bi Grow Mix is an organically fertilized soil with a rather airy structure and free from harmful fungi. This makes it a good foundation for successful growing. The plants can root on it directly from the initial stage onwards, and then develop further in size. As far as the amount and ratio of fertilizers is concerned, this substrate can be considered medium. What we mean is that a starting nutrition has been added to the B'cuzz Bio-Earth. After this starting period (depending on the number of plants and size of the pot) Atami advises to add liquid fertilizer to the crop for optimal results.