Discussion on rooting hormone strength because there is no information online about this.
So, RH ( rooting hormone) usually works with IBA / indole 3 butyric acid.
The most popular is the powder. It usually comes with the strength of 0.1% IBA. Now, the company called Hormex has different strength IBA homrones. They have a handful of strenghts.
#1 is 0.1 and #16 contains 1.60% that is a lot when you compare it to just 0.1%. Now, they advertise the 1.60 as " for difficult to root plants" Obviously, more iba means better and more chance of rooting. They also have a chart up stating which strength they recommend for different species ( weaker hormone for easy to root plants, stronger for harder).
But the question is, regarding difficulty, would the stronger 1.60# iba hormone produce roots faster? Its the highest strength so, you can probably root anything with it? Even hardwood cuttings?
Anyone has REAL experience with DIFFERENT STRENGTHS, or a chemist here?
thanks.