Konjac (Lasioideae Amorphophallus) is a perennial plant and a member of the family of Araceae.The original home of the konjac plant is not certain, but is considered to be in Southeast Asia. There are many species of konjac plants in the Far East and Southeast Asia that belong to the Amorphophallus, 1 for example, A. konjac C. Koch (Japan, China, Indonesia), A. bulbifer Bl.