Plants are 2" - 3", 3-4 year corms in 4" pots ready for planting. Plants may flower spring 2019, but with good culture should flower spring 2020. Plants are hardy in USDA zone 5b to 11, at least. However, these are growing well in Rochester NY.
 
This species is native to Yunnan Province China.  This species as with most Amorphophallus and Arisaema species are seasonally dormant. Plants sprout from a subterranean corm or tuber in the same fashion as the spring Crocus.  Plants of this species grow 24” – 36”.  Each corm produces a single stem that terminates with a single “leaf”.  Each leaf consists of a large umbrella of smaller leaflets that is 24” – 30” across.   The stem leaf stem is green spotted with pink and darker purple.  The plant alone is very ornamental. The inflorescence is produced from the naked corm before the leaves are produced.  In fact the corms don’t have to be planted for it to flower.  The inflorescence is 12” – 24” tall.  The inflorescence is single flowered and the flower opens long before the leaves are produced. The “flower” is actually a modified inflorescence that consists of the spathe (outer ornamental part) and the spadix (internal sexual bits).  The spadix is 20” – 30” tall and dark purple-black.  The spathe that surrounds the spadix is 12” – 20” long.  The outside of the spathe is dark green heavily spotted purple.  The inside is dark maroon-purple.  Flowers last only a few days.  The flowers attract flies for pollination.  Successfully pollinated "flowers" produce 6" - 10" heads of orange berries. The “fragrance” is heavily reminiscent of rotting meat or roadkill.