Gladeonions were bitter, strong-tasting root vegetables found in the glades of the Deepwoods. They were used for cooking and spicing and thus also cultivated in the cities like Great Glade. They were similar to Glimmer-Onions.
- Slip cultivated gladeonions in his garden in Great Glade in The Immortals.
- Zelphyius Dax had dried gladeonions stored on his skycraft, the Varis Lodd, also in The Immortals.
- Cade also had Gladeonions in his garden at the Farrow Ridges. He used them for cooking. For some reason they are spelled 'glade onions' in The Nameless One.