I've been using it on and off for years...remember, this is not a fertilize, rather it is a compound that enhances growth of the plant and I think may contain auxin...not for sure really about the last statement..
its kinda pricey $11 for a 4 oz. bottle but you dont use verry much. guess we will find out how good it works. AJ when you use it how much do you use and how often?
I am using it for seedlings to help with rooting. Like mentioned before no N- P-K value. A highly concentrated vitamin supplement. I don't see anything spectacular about it so far.