Full Specimen Plate
Amorphophallus konjac
Konjac / Voodoo Lily
Amorphophallus konjac Morphology
About Amorphophallus konjac
Amorphophallus konjac is a corm-forming aroid from China, Japan, and Indochina, best known outside collector circles as the source of konjac flour used in konnyaku and shirataki noodles. Each growing season, the corm sends up a single, umbrella-like compound leaf — deeply divided into many leaflets — on a tall, mottled snakeskin-patterned petiole that can reach well over a metre before the plant dies back to dormancy. Like its famous giant relative Amorphophallus titanum, it produces a foul-smelling inflorescence when it blooms, though on a far smaller and more manageable scale. Its dramatic annual cycle of dormancy, single-leaf growth, and periodic malodorous flowering makes it a genuine conversation piece for collectors willing to work with a deciduous aroid.
Native Range
China
Market Analysis
Amorphophallus konjac Price Guide & Auction Value
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Before You Buy
Species-specific things to check when evaluating a listing
- Check the corm is firm and heavy for its size, with no soft or mushy patches
- Confirm whether you are buying a dormant corm or an actively growing plant, as pricing and shipping season differ
- Be prepared for the plant to die back completely each year — this is normal dormancy, not plant death
Propagation Guide
How to Propagate Amorphophallus konjac
1-2 growing seasons to flowering size
Cultivar character is preserved through vegetative cuttings
Mature corms readily produce offset cormlets that can be separated during dormancy and grown on independently.
Care Guide
Amorphophallus konjac Care Guide & Growing Conditions
Rich, free-draining mix: 50% potting compost, 30% perlite, 20% horticultural grit.
Water freely during active leaf growth; withhold water almost entirely once the leaf yellows and the plant enters dormancy.
Tolerates average household or outdoor humidity during the growing season.
Balanced liquid fertiliser every 2-3 weeks during active growth to build corm size for next season.
Annually during dormancy, checking and refreshing substrate around the corm.
Common Problems
Corm rot during dormancy
Excess moisture while the corm is not in active growth
Store the dormant corm in barely damp or dry substrate in a cool, frost-free location
No flowering
Corm has not yet reached sufficient size
Continue feeding during the growing season to build corm mass over successive years
The Kitchen-Cupboard Aroid
Most people encounter Amorphophallus konjac's contribution to their life on a supermarket shelf, in shirataki noodles or konnyaku jelly, long before they ever encounter the living plant. The plant itself is a genuine oddity even by aroid standards — one leaf, once a year, on a tall mottled stalk that looks more like a small tree than typical foliage, followed by a bloom that smells exactly as unpleasant as its giant relative titanum's, just at a scale your living room can actually accommodate. China, Japan, and Indochina in the wild. An easy, forgiving corm for anyone curious about the genus beyond titanum.
