If you didn’t know it already, you can take it from me, the rooting abilities of Willow are unbelievable. We have attempted to root a lot of different things here, with some good success, but none so well as willows. My mom had a small coppiced willow tree outside her house that I wanted to take some cuttings of so I could get a willow tree or two down here. I cut a bunch of 1-2 foot long cuttings from the fresh ends (which were very dormant up in Arkansas) and threw them in water. I figured a couple would make it out of all that I picked.
Within a day or two the willows sent out roots (all of them) and within a week they broke bud and they’re growing quick. I even cut one of them in half to make it shorter, and well… that’s another willow tree.
No wonder this guy is used as rooting hormone, just look at it!