This is the mix used for all pre-bonsai at Canada Bonsai. This mix has a proven track-record spanning over 30 years.
It is expensive to ship substrate, and supplies are limited. This is being offered especially to help those who are stuck without alternatives. Please buy only what you need.
6L (enough to fill two 2.84L pots)
33% gravel (silica)
33% Coco Husk
+ Bio-Rock (McInnes)