Coco-coir is a great medium for cannabis and hemp because of its drainage and aeration qualities. The plants have better root health as the medium is pest resistant. It also offers better control over nutrition, enables rapid vegetative growth and maximum size & quality of buds.
CoirJiva is a perfect blend of buffered coir and perlite. Using perlite as a blend for the marijuana growing medium offers more aeration and drainage to the fibrous root system.