Giant taro is native to Southeast Asian rainforests. It was first cultivated in the Philippines. Its massive leaves resemble elephant ears. If cooked for a long time, these leaves are edible; however, the sap from the plant might hurt the skin. This plant is toxic to dogs, cats, and horses.
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Toxic to Human & Pets
Toxicity
Perennial
Lifespan
Herb
Plant Type
Spring, Summer, Fall
Bloom Time
All year round
Harvest Time
1 m to 5 m
Plant Height
1.8 m to 2.5 m
Spread
Green
Leaf Color
10 cm to 30 cm
Flower Size
Red
Fruit Color
White, Yellow, Green
Flower Color
Green
Stem Color
Non-dormant
Dormancy
Evergreen
Leaf type
20 - 38 ℃
Ideal Temperature
On This Page
Images
Distribution
Culture
Cultivars
Toxicity
Care Guide
FAQs
Common Diseases
Images of Giant taro
Distribution of Giant taro
Distribution Map
Giant taro (Alocasia macrorrhizos) is native to some countries in South Asia and Australia rainforests, and it has also been introduced to China, South America and some countries in Africa. The plant is farmed in Micronesia and is grown ornamentally in tropical gardens for its large leaves.
Native
Cultivated
Invasive
Introduced
No species reported
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Habitat
Along river banks
Hemisphere Trend Curve
Northern
Sorthern
Culture
Environmental Protection Value
It can improve the microclimate, reduce noise, conserve water sources, and regulate humidity.
Garden Use
Giant taro can provide excellent visual appeal for landscaping, especially in tropical summer gardens. It can be planted alone or in clusters, and is a popular choice in containers or gardens for both its striking appearance and the shade that larger specimens provide. Its large leaves pair well with caladiums, cannas, and Chinese hibiscus.
Symbolism
Purity, happiness, sanctity, connection with one's ancestors, a gift from the gods
Interesting Facts
According to legend, there was a princess in the ancient European Aegean Sea who liked the elephant's ear plant. The beautiful princess fell in love with a human teenager. When the teenager heard that there was ice-like elephant's ear growing in the cold Arctic, he sought out to find it for the princess, but failed after suffering from many different kinds of hardships. But the princess thought she would be happy as long as they were together.
Name Story
Giant taro: The petiole of this plant can grow as high as 1.8 m, and the whole plant can reach up to 3.5 to 4.5 m. As it is considered a giant in the Alocasia genus, it is called giant taro.
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Cultivars
There are several recognized cultivars of Giant taro, including the following common varieties :
Giant taro plants are mildly to moderately toxic to humans, cats, and dogs. All parts contain calcium oxalate crystals causing irritation and discomfort. Consumption without proper preparation leads to gastrointestinal issues in humans. Physical contact can irritate the skin. For pets, ingestion results in symptoms like vomiting, diarrhea, and oral irritation. Immediate veterinary care is essential if pets consume giant taro.
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Water:
Originating from tropical rainforests, giant taro thrives in high humidity and prefers consistently moist soil without overwatering. Watering should occur weekly to match its natural rhythm. Typically grown outdoors, giant taro benefits from rainfall patterns that mimic its native habitat for optimal growth.
Fertilize:
Giant taro requires high nitrogen fertilizers for optimal leaf growth, with a balanced formula (20-20-20) applied bi-weekly in spring/summer, monthly in fall, and paused in winter. Water the soil before fertilizing, and feed young plants consistently while mature ones need less.
Pruning:
Pruning giant taro involves removing dead or damaged leaves in early spring with clean, sharp tools to promote healthier growth and manageable size. Regular pruning enhances airflow, reduces pests, but avoid over-pruning as giant taro relies on foliage for photosynthesis.
Propagation:
Giant taro propagates optimally in Spring using tuber division, rated as moderately difficult. Success hinges on a healthy parent plant and suitable conditions. Indicators of successful propagation include visible new growth and root development.
Repotting:
Repot giant taro annually in spring into a large pot to accommodate its growth up to 15 feet. Use well-draining soil in a container with drainage holes. Maintain consistently moist soil and provide indirect light for optimal growth.
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