Alocasia macrorrhiza
Giant Taro, Giant Elephant Ear, Upright Elephant Ear.
| Family | 
| Araceae | 
| Genus | 
| Alocasia | 
| Species | 
| macrorrhiza | 
| Category | 
| Bulbs, Perennials, Tropicals | 
| USDA Hardiness Zone | 
| 9 - 12 | 
| Canadian Hardiness Zone | 
| Requires cold season protection under glass. | 
| RHS Hardiness Zone | 
| H1a | 
| Height | 
| 4 - 5 m | 
| Spread | 
| 1 - 2 m | 
| Landscape | 
| Perfect as a greenhouse plant for containers, or for the shade gardens. | 
| Cultivation | 
| Best grown in part shade or filtered sun in moist to wet, organically rich soils in sheltered locations protected from strong winds. | 
| Growth | 
| Fast | 
| Pests | 
| May be prone to spider mites, scale, mealy bugs, and aphids. | 
| Leaf Description | 
| Thick, sculpted, glossy green, wavy-edged leaves, and up to 1 m long. | 
| Notable Specimens | 
| Queen Sirikit Botanic Garden, Mae Rim District, Chiang Mai Province, Thailand. | 
| Propagation | 
| By seed and division of offset corms. | 
| Ethnobotanical Uses (Disclaimer) | 
| Roots are used to treat swollen lymph glands and the stem is used to treat stomach-ache and diarrhoea. The corm and stem are eaten cooked. |