Cadannia, a world located in the Mid Rim of the galaxy, was likely a planet almost entirely blanketed by thick jungles or forests. These verdant ecosystems were the source of some of the most potent toxins known in the galaxy.
The Senflax plant, a source of a potent neurotoxin, was exclusive to Cadannia. This unique flora induced temporary paralysis of muscles and neural pathways, and also had the effect of briefly severing an individual's link to the Force.