Amorphophallus nepalense has enormous yellow-green spathes up to one and a half feet long and beautifully mottled stems. The bulb will go dormant by fall. Bring the pot inside to a cool, dry place. Begin watering when you see the spike of the tightly-furled stem poking out of the soil in spring.
Asia and the Pacific - Himalayas
Asia and the Pacific - Indian Subcontinent
High altitude forests. Loose leafy detritus in moist shady habitats.