Devil's tongue

Amorphophallus konjac | Also known as: Snake palm, Umbrella arum, Voodoo lily, Konjaku, Amorphophallus rivieri, Amorphophallus mairei | Rating: 3 votes | Print / Pdf

If plants had jobs this one would work in the circus

Amorphophallus konjac, devil's tongue or voodoo lily deserves its odd common names as it's an odd looking plant! It has a thick fleshy stalk, purple in colour and grows to six feet in height. Around this stalk grows a large single purple leaf. The flowers it produces are no less spectacular. They have thick and glossy purple petals, and are vase shaped. They also give off a good fragrance. It is used to flavour food is Japan, and it has long been thought to aid weight loss. Many supplements containing Amorphophallus konjac have been marketed.

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Known dangers?
  • no
Height [m]
  • 1 - 1.3
Spread [m]
  • 1 - 1.3
Dominant flower colour
  • Purple
Flower Fragrance
  • Yes, let it smell
Flowering seasons
  • Early summer
  • Mid summer
  • Late summer
Foliage in summer
  • Green
Foliage in Autumn
  • Green
Propagation methods
  • seed
  • offsets
Growth habit
  • Erect
  • Acidic
  • Neutral
Hardiness zone
  • Z14-15
Heat zone
  • H12-10
Heat days
  • 150 - 210
  • well-drained but frequently watered
Soil type
  • loams
Sun requirements
  • Partial shade
  • Sheltered
Standard category
  • Exotic, house plants & other
  • Exotic
Grown for
  • Attractive flowers and foliage
Creative category
  • Kid Approved
  • Fast growing
  • Fine fragrants
  • Colours
  • For birds & bees
Garden type
  • Indoor or winter garden
  • Containers
Gardening expertise
  • intermediate
Time to reach full size
  • 1 to 2 years