Blue Hawaii Elephant Ear (Colocasia esculenta 'Blue Hawaii')

Blue Hawaii Elephant Ear

Colocasia esculenta 'Blue Hawaii'

Vibrant blue-purple foliage commands attention like a tropical sunset. Large herbaceous perennial; common name: Blue Hawaii Elephant Ear.

Partial sun
1–2/week
Moderate
🌱

Plant Needs

☀️
Sunlight Bright indirect light; avoid direct midday sun which can scorch the delicate blue foliage
💧
Watering Water thoroughly when the top 2–3 cm of soil is dry; ensure proper drainage to prevent root rot
🌡️
Temperature Thrives in 18–27°C; protect from temperatures below 12°C to avoid leaf yellowing and damage
🔍

Characteristics

  • Leaf: Large, heart-shaped leaves with metallic blue-purple hue; thick, waxy texture
  • Stem: Thick, succulent petioles with deep purple undertones
  • Inflorescence: Inconspicuous spathe and spadix; rarely produced in indoor cultivation
🛠️

Care Guide

Watering

Keep soil consistently moist but not waterlogged; mist foliage to boost ambient humidity

Fertilization

Diluted balanced liquid feed every 2 weeks. Discontinue fertilization in autumn and winter when growth slows

Composted banana peel tea:Steep fully composted banana peels in water for 24 hours; dilute 1:20 for root drench; avoid using raw peels to prevent pest infestations
Pruning
  • Remove yellowing or damaged leaves at the base of the petiole to maintain plant health
  • Thin overcrowded clumps in early spring to improve airflow and reduce disease risk
  • Trim dead foliage in autumn if grown outdoors in cool regions to prepare for dormancy
⚠️

Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; ingestion leads to oral irritation, drooling, vomiting, and difficulty swallowing

Humans: Contains calcium oxalate crystals; ingestion causes oral and throat irritation; sap may cause mild skin rash

📖

Garden Uses & Culture

Culture: Symbolizes tropical abundance in traditional Pacific Island ceremonies

Usage: Ornamental foliage plant for water garden edges, container displays, or tropical landscape borders