How to kill a weeping willow?
Cut a 1/2 inch groove all around the tree about an inch in depth. That’ll kill it pretty quick. Otherwise, tear some bark off and drive copper nails into it, glue the bark back over the nails, this is a slow method though….like 12-18 months, but pretty damn effective. As far as all these ‘do-gooders’ and tree huggers go, if that SOB of a neighbour doesn’t respect YOUR SPACE AND PROPERTY, annihilate the prick. AND his tree. Good Luck.