Fighting Tree
From Jenny Everywhere Wiki
The Fighting Trees were animate, bellicose trees native to at least one universe's version of the Land of Oz. They were planted along the length of the border between Munchkin Country and Quadling Country. On two separate occasions, the Tin Woodman dealt with them by raising his axe threateningly at them, without actually having to harm any of them. (PROSE: The Crew of the Copper-Colored Cupids in Oz)
Behind the scenes
Having debuted in the original 1900 Wonderful Wizard of Oz novel, the Fighting Trees are in the public domain.