I have read about willow being used as a rooting hormone, I am here to ask if anyone knows of plants more rich in IBA and if water extracts are the ideal solvent? I am looking for something more tropical as I am in Ecuador. Shipping rooting hormone is not the best option here but it is one. I would rather use a bit more time and effort than outsourcing though. So any insightfilled science based information is very appreciated.
I will continue to research myself, thanks!