I decided to give rooting hormone a try and got a bottle of Rootone since it's a common one and had reasonable reputation. I thought IBA is the main rooting hormone in use and most websites claim Rootone has it. But I was just looking at the label and the only ingredient is 0.2% NAD other than the 4% Thiram fungicide. So what happened?
I finally managed to find some info on the pesticideinfo website. Looks like there was a cancelled (old) version which had an additional 0.1% IBA which is still paltry. But they decided to downgrade further by completely eliminating that.
So where can I get a supply of high concentration IBA? Is Dip N Grow the only choice? I'm sort of concerned with the alcohol centent in Dip N Grow burning the cuttings though. Thanks.