Because they were hung simultaneously ( so no one bought cursed specially) The three witches applied their dying breath to curse the tree amd everyone one particular who dared disreapect ,cut it down, ect…after they died, the ropes stayed but the witches were being absent, and three significant hills arose… http://franciscoveikm.blogsmine.com/3565699/the-witches-tree-of-louisville-an-overview