Treant (Polish: Dębostwór, literally Oakcritter) is an entity that Geralt, Milva and Angoulême met in Caed Myrkvid. It looks similar to an oak tree, except of course being alive. Tree creatures are controlled by druids who use them to trap enemies. Other than tree form, the creature can even resemble wild animals or monsters such as giant mantises, boars and fiends. Besides druids, even some dryads can create and command these creatures.
- Dębostwór appears in Wiedźmin: Gra Wyobraźni.
- In The Witcher 3: Wild Hunt, an "ancient race of tree people" are mentioned in Blackbough's map description, possibly referring to the tree creatures.
- In The Tower of the Swallow, a flaminica calls the one she's controlling "Little Tree". However, this may have been a name she gave it, rather than the name of the species itself.
- It may be a possible reference to the original J.R.R. Tolkien's Ent or Huorn.
- Name "Treant" in turn is a nod to similar race in Dungeons & Dragons.