The Olvar are all inanimate forms of life in the world of Arda, specifically referring to plants.
The Olvar have existed in the world since the Spring of Arda. Yavanna planted the seeds that would become the Olvar, but much of her work was marred by Melkor. With the unexpected creation of the Dwarves, Yavanna feared for the safety of trees and sought the advice of Manwë, who allowed many spirits to walk amongst them, giving rise to the Ents.
- ↑ The Silmarillion, Quenta Silmarillion, Chapter II: "Of Aulë and Yavanna"
- ↑ The Complete Guide to Middle-earth