A delicate and highly toxic flower that Garak says he cultivated while posing as a gardener at the Cardassian embassy on Romulus, as he tells Odo in Broken Link.
The Edosian orchid is an ornamental flower that is as dangerous as it is attractive.
It is mentioned in the Deep Space Nine episode Broken Link, set in 2372. While the Defiant carries the ailing Odo to the Founders, Garak keeps him distracted with talk, and Odo presses him about his years in the Obsidian Order. Garak admits to having been a gardener at the Cardassian embassy on Romulus, where his speciality was Edosian orchids, and notes mildly that a number of Romulan dignitaries died in unexplained circumstances that year.
The flower's name recalls Edos, the homeworld given to the Enterprise navigator Arex of The Animated Series, and the orchid has since been used as a shorthand for Garak's blend of refinement and menace.