The spring transplanting season is a difficult and dangerous time for most bonsai. This chemical is designed to help your bonsai overcome transplant shock and promote vigorous root growth. Freshly transplanted trees should be soaked in a one gallon of water containing a tablespoon of KLN. We consider it to be vastly superior to Vitamin B-1 complexes such as Superthrive. It can also be used in the propagation of cuttings and air layers.