Giant Elephant Ear (Alocasia calidora)

Giant Elephant Ear

Alocasia calidora

Broad, dramatic leaves evoke tropical grandeur. Large herbaceous perennial with bold foliage; common name: Giant Elephant Ear.

Partial sun
1–2/week
Moderate
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Plant Needs

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Sunlight Bright indirect light; avoid direct midday sun which can scorch leaf surfaces
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Watering Water thoroughly when the top 5 cm of soil is dry; avoid waterlogging to prevent root rot
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Temperature Thrives in 18–27°C; protect from temperatures below 12°C to prevent leaf yellowing and tissue damage
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Characteristics

  • Leaf: Large, arrow-shaped, glossy deep green leaves up to 1 m long with prominent pale veins
  • Stem: Thick, upright, fleshy petioles supporting leaf blades
  • Inflorescence: Spathe-and-spadix structure; pale green spathe enclosing creamy spadix (rarely produced indoors)
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Care Guide

Watering

Keep soil consistently moist but not soggy; increase frequency in hot, dry weather

Fertilization

Diluted balanced liquid fertilizer every 2 weeks. Avoid over-fertilizing to prevent leaf tip burn; cease feeding in autumn and winter

Banana peel compost tea:Soak fully composted banana peels in water for 24 hours; dilute 1:20 for root drench; discard solids to avoid pest infestations and odor
Pruning
  • Remove yellowing or damaged leaves at the base of the petiole to maintain plant health
  • Trim overcrowded petioles to improve airflow and reduce fungal disease risk
  • Cut back leggy growth in early spring to encourage new, compact foliage production
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Moderately toxic; calcium oxalate crystals cause oral pain, drooling, vomiting, and difficulty breathing in severe cases

Humans: Contains calcium oxalate crystals; ingestion causes oral irritation, swelling, and temporary difficulty swallowing

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Garden Uses & Culture

Culture: Symbolizes tropical luxury and bold natural beauty; used as a dramatic focal point in landscape design

Usage: Ornamental foliage plant for indoor decor and outdoor tropical garden beds