Alocasia plumbea ‘Nigra’
 
Common Names Metallic Taro, Black Magic Alocasia, Plumbea Nigra
 
Zones 9B–11
 
Alocasia plumbea ‘Nigra’ is a striking tropical aroid known for its dark, metallic foliage and upright form. Native to Indonesia, this cultivar features broad, arrow-shaped leaves with a deep purple-black sheen and contrasting maroon undersides. Its bold coloration and architectural presence make it a favorite for shaded gardens, interiorscapes, and container displays.
 
Key Features
Growth Habit: Upright, clumping; moderate growth rate
Height: 3–5 ft. tall; 2–4 ft. wide
Trunk: Herbaceous; corm-based growth
Leaves: Arrow-shaped; glossy black to deep purple; 12–24 in. long; maroon undersides
Petiole: Thick, dark purple to maroon; sturdy and upright
Inflorescence: Rare indoors; greenish spathe and spadix
Fruit: Not typically produced in cultivation
Ecology: Native to Indonesia; selected for metallic leaf coloration and upright habit2
 
Growing Conditions
Light: Partial shade to bright indirect light; avoid direct sun to prevent leaf scorch
Watering: Water when top 1–2 in. of soil are dry; maintain consistent moisture without waterlogging
Soil: Rich, well-draining mix; ideal blend includes peat moss, orchid bark, perlite, and coco coir
Temperature: 65–85°F (18–29°C); protect from cold drafts and frost
Humidity: Prefers 60–80%; use pebble trays or humidifiers indoors
Propagation: By division of corms or offsets
Tolerance: Sensitive to cold, overwatering, and low humidity
 
Landscape Use Ideal for shaded garden beds, tropical patio containers, and dramatic interiorscapes. Pairs well with Colocasia ‘Black Magic’, Philodendron ‘Dark Lord’, and Calathea ‘Dottie’ for layered dark-foliage compositions.