Giant Taro (Alocasia macrorrhiza)
About this plant
Alocasia macrorrhiza, commonly called Giant Taro, is a large tropical plant known for its huge, arrow-shaped leaves that can grow very big. It is often grown as an ornamental plant in gardens and indoors in warm climates. The plant has a dramatic, lush appearance and can add a tropical feel to any space. It is native to Southeast Asia and the Pacific Islands.
Taxonomy
Higher classification: Order: Alismatales
Origin & Distribution
- Native region
- Southeast Asia, Pacific Islands
- Distribution
- Native to Southeast Asia and the Pacific Islands; cultivated in tropical and subtropical regions worldwide.
Care
- Suitable locations
- Indoor, Outdoor, Greenhouse, Balcony
- Preferred window facing
- East-facing, Southeast-facing, South-facing
- USDA hardiness zones
- 9-11
- Soil pH
- 5.5-7.0 (slightly acidic to neutral)
- Soil type
- well-draining, rich potting soil with organic matter
Watering. Keep soil consistently moist but not waterlogged. Water when the top inch of soil feels dry. Reduce watering in cooler months when growth slows.
Fertilizing. Feed the plant every 4 to 6 weeks during the growing season (spring and summer) with a balanced, water-soluble fertilizer diluted to half strength. Reduce feeding in fall and winter when growth slows.
Alocasia macrorrhiza is a tropical plant that prefers warm, humid conditions and indirect light. It needs regular watering but the soil should not stay soggy. Watch for pests like spider mites and keep the plant in a spot with good air circulation. It requires moderate care and occasional feeding.
Propagation
- Propagation methods
- Division, Offsets
Ornamental features
- Flowering
- Yes
- Flowering period
- summer
Large, glossy, arrow-shaped leaves with prominent veins; dramatic tropical foliage.
Toxicity & Safety
All parts of the plant contain calcium oxalate crystals which can cause irritation and swelling if ingested. Keep away from children and pets.
Allergy information
Alocasia macrorrhiza may cause mild skin irritation in sensitive people due to its sap. Avoid direct contact with the sap and wash hands if you touch the plant. It is not known to produce airborne pollen that causes allergies.
Common problems
Overwatering can cause root rot, while too little water leads to drooping leaves. Low humidity may cause leaf edges to brown. Pests such as spider mites and aphids can appear if the air is dry or the plant is stressed.
Uses
Primarily grown as an ornamental plant for its impressive foliage in gardens, greenhouses, and indoor spaces.
Notes
Prune damaged or yellowing leaves to encourage healthy growth. Repot every 1-2 years to refresh soil and accommodate growth. Protect from cold drafts and temperatures below 15°C (59°F).