Huorns were creatures much like Ents, although they do not appear to have been truly sentient.
The origin of the Huorns is unknown. It is not clear if Huorns were Ents that had become tree-like, or trees that had become Entish. Perhaps both varieties existed. Either way it is obvious they were part way between trees and Ents.
During the War of the Ring, Huorns were aroused by Treebeard to destroy Nan Curunír. Gandalf saw the shadow of these Huorns, as he rode with the host from Edoras to Hornburg. Directed by the Ents, the Huorns also helped the Rohirrim to fight the Orcs at the Battle of the Hornburg.
Huorns had great power and could wrap themselves in shadow. When angry, they were able to move with great speed. The Huorns further had voices, as they could speak with the Ents. When no Ents looked after them, the Huorns were "queer and wild", a threat to the Free peoples.
 Portrayal in adaptations
1982-97: Middle-earth Role Playing:
- Huorns are classified as Animate Plants (Monsters). The evil, "blackhearted" ones, went away from Fangorn Forest and the protection of the Ents and settled in Mirkwood. Huorns eat living beings, and they come in as many different forms as trees do. Old Man Willow is a Huorn of the Old Forest.
1995-8: Middle-earth Collectible Card Game:
- Huorn is an Awakened Plant (Creature), able to inflict one strike on a player.
- ↑ David Day (1996), A Tolkien Bestiary, p. 142
- ↑ 2.0 2.1 2.2 2.3 2.4 J.R.R. Tolkien, The Lord of the Rings, The Two Towers, "Flotsam and Jetsam"
- ↑ J.R.R. Tolkien, "Time-scheme for The Lord of the Rings" (Marquette MSS 4/2/18) in Wayne G. Hammond and Christina Scull (eds), The Lord of the Rings: A Reader's Companion, p. 412
- ↑ J.R.R. Tolkien, The Lord of the Rings, The Two Towers, "Helm's Deep"
- ↑ J.R.R. Tolkien, "The 'Túrin Wrapper'" (edited by Carl F. Hostetter), in Vinyar Tengwar, Number 50, March 2013, p. 17
- ↑ Wayne G. Hammond and Christina Scull (eds), The Lord of the Rings: A Reader's Companion, p. 425
- ↑ Ruth Sochard Pitt, Jeff O'Hare, Peter C. Fenlon, Jr. (1994), Creatures of Middle-earth (2nd edition) (#2012)