Personally use it. Use in foliar spray where extra help needed with weak branch/foliage and first watering upon repotting for added boost. Cannot say for sure has big effect but label encourages my spirit. Being Japanese product would like to see what their plant growers say about it (in english). Only use in such limited manner because of cost
. Otherwise would use with fertilizer regularly. Michael Hagedorns book Bonsai Heresy tells us "jury is still out on this and Superthrive".