This June, visitors to Franklin Park Zoo had the rare opportunity to see a titan arum (affectionately nicknamed Fester by staff) in bloom. Called the Amorphophallus titanum — better known as a titan arum or corpse flower (due to its production of a very pungent aroma like that of a rotting carcass), these are among the most gigantic of flowers – blooms are potentially 9 feet in height and 6 feet across.