It’s a good question – what do the numbers mean after Hormex, like #3 or #1? Do they refer to IBA? Yes, the numbers after different Hormex products refer in a shorthand sort of way to the strength of the product. This range of IBA concentrations really sets Hormex apart and makes your job as a propagator more successful. The numbers range from Hormex #1 to the most concentrated, #30, indicating their relative strengths. No, most other powdered rooting hormones are not differentiated in this way and yes, it does make a big difference.
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