I bought a small pond that was infested with willow trees and saplings to the point the pond was unfishable due to the density of the willow growth. I've spent the last half of the summer clearing the banks of the trees so I that I can get a clear view of the water.

One thing I've noticed is that if I cut a tree off at the base and drop it into the water, roots will start to form from the branches that are wet and the tree will try to save itself! Also everything I cut and left rooted is starting to sprout again. I figure I will keep cutting and building brushpiles for the rabbits and spray the new stuff. I told my wife no matter how much I cut and spray, I don't think we will ever be rid of the willows.