Arkham Botanical Gardens
Heaven knows why but Arkham Asylum has some beautiful Botanical Gardens. Encased in a large but beautiful Greenhouse structure, the Gardens are home to many a natural beauty. Some say that the Gardens were built to appease Poison Ivy when she visits the Asylum because without them she would make a point of killing guards on an almost daily basis.
Ivy's Specialist Cell: Further proof that the Gardens were built for Ivy is that a Specialist Cell is built for her specifically within the Botanical Gardens. A section of the Garden is walled off with glass as Ivy's own personal habitat and she may maintain the plants within it as long as she abides by the "Non-Aggression Pact" set down by the Warden. Should she deviate from the agreement, Ivy's plants will be killed and she shall be moved into a standard Cell.
Guards guarding Ivy are equipped with specialist gear to help monitor there genetic chemistry and prevent Ivy's Pheromones from taking effect. They even wear masks to safeguard themselves for her spores.
There is also a man made "Fire-Break" between Ivy's Cell and the rst of the Garden in order to stop her from using the Plants around her for nefarious ends.
