|Introduced in||"To Cut a Woman's Hair"|
|Voiced by||Thurop Van Orman|
She has a really big bald spot (which she refers to as a "balding problem") and wants princess hair as a wig so she can be beautiful. This causes Finn to tell her that he and Jake only help people in danger. She then uses her psychokinesis to drag Jake under her and sits on him, threatening to suck him into her "bottomless bottom" unless Finn gets her some princess hair. Finn goes around to some of the princesses he knows, wanting to get them to cut off some of their hair. He returns with Princess Bubblegum's hair, which she rejects because it turns out to be made of bubblegum. Finn gets mad and tells the witch she will never be beautiful because she's ugly on the inside. In the end, Finn takes pity on her and gives her his long blond hair. She then declares she will use his hair for evil, then promptly trips on the hair and falls down, possibly fracturing a branch.
Tree Witch has the appearance an old woman. Her skin resembles that of tree bark, her hair resembles foliage, and her nose looks similar to a twig. She also has emerald green and black eyes and a wig made from Finn's hair. Before she had Finn's hair, she had brownish-gray hair that is only on the sides and back of her head. Her clothes appear to be tattered brown cloth with small patches of dried leaves. At the end of the episode, her lips are splattered with Princess Bubblegum's hair because she popped a bubble.
The Tree Witch has the ability to transform her body into different kinds of plants. She can manipulate objects with psychokinesis and can create a magical shield to protect herself. She also has the ability to swallow things whole with her "Bottomless Bottom."
- The Hag from "City of Thieves" was also a Tree Witch, with powers of transforming her body into trees and wood.
- The Tree Witch is voiced by The Marvelous Misadventures of Flapjack's creator Thurop Van Orman who did the main character Flapjack's voice, himself.
- She might have a short attention span because when Finn came back to talk to Jake, who was nearly completely swallowed by her butt, she didn't notice him immediately.
- She owns a cat who has kittens. She's thinking of naming one of them "Little Whiner."
- The Tree Witch's reason for wanting princess hair was the answer to one of Gaia Online's ten trivia contests to answer to try to win a first season DVD set.