The Garlanic tree was a woody plant lifeform native to Gemworld, the Elaysian homeworld.
The family of Melora Pazlar gave her a cane made from the wood of a garlanic tree. (DS9 episode: "Melora")
Elias Vaughn once saw a strand of garlanic trees which had been poisoned by a biogenic gas. (DS9 novel: Avatar)