1> It has land reddish brown color. (When it dries, it becomes light or dark brown.) 2> Granular gather to create spaces between clumps, which physically improves soil quality such as air permeability and drainage. 3> At the same time, there is water retention and fertilizer retention in the mass. Since it is dug up from the ground, it is clean and almost sterile, so it is also used for sprouts.