Alocasia macrorrhizos

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Taxonomy (3)

Classification: Angiosperm, monocot
Family: Araceae
Common name: Giant Taro, Wild Taro, Upright Elephant Ear Taro 

General Information (1,2,3)

Region of Origin: Philippines, Sri Lanka, India and Malaysia
USDA Plants Hardiness Zones: 8-11
Growth Habit: Herb

  • Size: 12-15 feet

Diagnostic Characteristics

Leaves (1)

  • Shape: Arrow
  • Other: 3-6 feet long

(Photo by Garrett Carter)

Stem/Bark (1)

  • Color: Green
  • Texture: Smooth

Flower (4)

  • Inflorescence type: Spadix

Fruit (1,4)

  • Fruit type: Berry
  • Color: Red to orange

Horticultural Information (1,3)

  • Light: Full sun to full shade
  • pH: 6.6-7.5
  • Maintenance: Easy to care for
  • Landscape Uses: Greenhouse, shade

Interesting Facts (1)

  • Can caused stomach aches if eaten when not cooked properly
  • The sap can cause skin irritation


1) Christman, S. (2002, March 16). Floridata: Alocasia macrorrhiza. Welcome to Floridata. Retrieved April 3, 2013, from
2) Nauheimer, L., Boyce, P., & Renner, S. (2011). Giant taro and its relatives: a phylogeny of the large genus Alocasia (Araceae) sheds light on Miocene floristic exchange in the Malesian region.. Molecular Phylogenetics and Evolution, 63(1), 43-51.
3) PlantFiles: Upright Elephant Ear, Giant Taro, Wild Taro Alocasia macrorrhizos. (n.d.). Dave's Garden. Retrieved April 2, 2013, from
4) Alocasia Macrorrhiza, Upright Elephant Ears. (n.d.). ALOCASIA MACRORRHIZA. Retrieved April 3, 2013, from

Prepared by Garrett Carter as a course requirement for BIOL 3630/5630, Spring 2013
Edited by Jessica Bartek