Eazy Gardening

Unveiling the Exotic Beauty of Colocasia Esculenta ‘Blue Hawaii’

Colocasia esculenta ‘Blue Hawaii’ is a unique plant that is best known for its large and colorful foliage. Often referred to as Taro, this plant is popular in many cultures, where it is used for food, medicine, and even decorations.

In this article, we will explore the characteristics, cultivation, and care of the Colocasia esculenta ‘Blue Hawaii’. Whether you are new to gardening or an experienced horticulturist, this article will provide you with the information you need to care for this stunning and interesting plant.

1) Overview of the plant:

Common names, vernacular names:

The Colocasia esculenta ‘Blue Hawaii’ is also known as taro, elephant ear or eddo. In Hawaii, it is known as kalo.

In Vietnam, it is known as khoai mn. In Indonesia, it is known as talas.

Description of the plant:

The Colocasia esculenta ‘Blue Hawaii’ is a beautiful and unique plant that stands out with its large, heart-shaped leaves and blue-gray color that almost appears like it was painted on. These leaves can grow up to 2 feet long and wide, making this plant an excellent addition to any garden or indoor space.

The roots of the plant are starchy, making it an excellent source of nutrition and food for many cultures. It is also known for its medicinal properties, which have been used for centuries to treat various illnesses.


The Colocasia esculenta ‘Blue Hawaii’ is an evergreen plant that blooms during the summer months. While it is not known for its flowers, it does produce a small yellow-white spadix that is surrounded by a green spathe, which is a type of modified leaf.

The plant is not only aesthetically pleasing, but it also provides many benefits to wildlife. The leaves of the plant are a source of food and shelter for various insects, such as bees and butterflies.

Additionally, the flowers of the plant attract a wide range of pollinators, helping to promote pollination and biodiversity in the local ecosystem. 2) Plant cultivation and care:

Preferred growing conditions:

The Colocasia esculenta ‘Blue Hawaii’ thrives in warm and humid climates, making it an excellent choice for outdoor gardens in tropical regions.

It can also be grown indoors in a pot with proper drainage. For best results, the plant requires well-draining soil, ample sunlight, and regular watering.

It should be watered thoroughly once a week and kept moist but not waterlogged. The plant also requires adequate fertilization to promote healthy growth and blooming habits.

Potential pest and disease issues:

The Colocasia esculenta ‘Blue Hawaii’ is susceptible to various pests and diseases, just like any other plant. Common pests include spider mites, aphids, and mealybugs.

These pests can damage the leaves of the plant, causing them to wilt and turn yellow. Diseases such as fungal leaf spot can also affect the health of the plant.

To prevent these issues, it is essential to keep the plant well-watered and fertilized, as well as prune damaged or infected leaves. Planting and maintenance tips:

When planting the Colocasia esculenta ‘Blue Hawaii’, it is important to make sure there is enough space for the plant to grow and develop.

The plant should be planted in a well-draining soil, and it should be watered regularly. To promote healthy growth, the plant should be fertilized twice a year, once in the spring and another in the fall.

It is also a good idea to check the plant for pests and diseases regularly and remove any damaged or infected leaves promptly. Conclusion:

In conclusion, the Colocasia esculenta ‘Blue Hawaii’ is a unique plant that provides many benefits to both humans and wildlife.

With its large and colorful foliage, it is an excellent addition to any garden or indoor space. By following the tips and guidelines outlined in this article, you can ensure that your Colocasia esculenta ‘Blue Hawaii’ stays healthy and vibrant for many years to come.

Whether you are new to gardening or an experienced gardener, the Colocasia esculenta ‘Blue Hawaii’ is a wonderful plant to add to your collection. 3) Plant propagation methods:

The Colocasia esculenta ‘Blue Hawaii’ can be propagated through both sexual and asexual reproduction methods.

Sexual reproduction involves the use of seeds, while asexual reproduction involves the use of vegetative parts of the plant. Here are some of the most common methods for propagating this plant:

a) Seed propagation:

Seed propagation involves collecting seed pods from the plant and planting them in a well-draining soil.

The seeds should be planted at a depth of approximately 1 inch into the soil and watered regularly. In ideal conditions, the seeds will germinate within four to six weeks.

However, seed propagation is not a common method for propagating the Colocasia esculenta ‘Blue Hawaii’ due to the low success rate of germination. b) Vegetative propagation:

Vegetative propagation is the most common method for propagating the Colocasia esculenta ‘Blue Hawaii.’ This method involves the use of vegetative parts of the plant, such as tubers, corms, or rhizomes.

These parts can be divided into smaller sections and planted in separate containers or directly into the ground. It is important to note that each divided section should have at least one growing point or bud to ensure proper growth.

Another asexual method of propagation is through offset division where a new plant grows as a side shoot from the parent plant. This offset can be cut or pulled off when it has developed some roots.

c) Care for newly propagated plants:

Newly propagated Colocasia esculenta ‘Blue Hawaii’ plants need a lot of care and attention to ensure proper growth and development. They should be kept in a warm and humid environment and watered regularly to keep the soil moist.

Fertilization can also help promote healthy growth, but it should be done conservatively to avoid overfeeding the plant. 4) Plant adaptations to different environments:

The Colocasia esculenta ‘Blue Hawaii’ is known to thrive in warm and humid environments, but it has adaptations that make it possible for it to survive in various regions.

Adaptations to different environments include the following:

a) Tolerance to waterlogging:

The Colocasia esculenta ‘Blue Hawaii’ has a unique root system that allows it to thrive in waterlogged soils. The plant has modified roots, known as aerenchyma, which allow oxygen exchange in waterlogged conditions.

This adaptation allows the plant to continue to grow even when the roots are submerged in water. b) Drought tolerance:

Despite its preference for humid environments, the Colocasia esculenta ‘Blue Hawaii’ has adaptations that allow it to tolerate drought conditions.

In dry conditions, the plant will conserve water by closing its stomata and reducing transpiration. This adaptation allows the plant to survive in areas with sporadic rainfall or periods of drought.

c) Shade tolerance:

While the Colocasia esculenta ‘Blue Hawaii’ prefers full sunlight, it can also tolerate shade conditions. It has adapted to low light conditions by having larger leaves that can capture more light energy.

The plant can grow and develop in areas with partial or full shade, making it a suitable option for indoor or shaded outdoor areas. d) Adaptation to acidic soil:

The Colocasia esculenta ‘Blue Hawaii’ is also an excellent example of an adaptation to acidic soil.

The plant can grow in a wide range of soil pH levels, with the ideal range being between 5.5 and 6.5. It can tolerate more acidic conditions by producing specialized enzymes that can break down and absorb nutrients in the soil. Conclusion:

In conclusion, the Colocasia esculenta ‘Blue Hawaii’ is a versatile and adaptable plant that can survive and grow in various environments.

Its unique adaptations, such as its tolerance to waterlogged and acidic soils, make it an ideal choice for many gardeners and horticulturists. By understanding the different propagation methods and adaptations of this plant, gardeners can successfully grow and care for this beautiful and unique plant.

5) Usage of the plant in indoor settings:

Colocasia esculenta ‘Blue Hawaii’ can be a stunning addition to an indoor space due to its tropical appearance and large foliage. Growing an indoor Colocasia esculenta ‘Blue Hawaii’ is a great way to add a touch of exotic beauty and visual interest to your home or office.

Here are some considerations when growing this plant indoors:

a) Light and temperature:

The plant should be kept in a bright, but indirect light environment with temperatures between 65 to 75F. The plant can also be placed near a sunny window, but care should be taken to avoid exposing the plant to direct sunlight, which can damage the foliage.

b) Soil and container:

The plant requires well-draining soil that is moist, but not waterlogged and organic-rich. Choose a pot or container with adequate drainage holes to prevent waterlogging.

Re-pot the plant every two years to prevent the roots from becoming root-bound in the pot and to refresh the soil nutrients. c) Watering and fertilization:

Colocasia esculenta ‘Blue Hawaii’ prefers to be kept evenly moist, so the soil should be tested regularly to ensure the moisture levels are not too high or too low.

The plant should be fertilized once a month with a balanced liquid fertilizer.

d) Pruning and Pests:

The plant requires occasional pruning of yellowing or damaged leaves, and cleaning of the leaves’ surface to remove dust.

Watch out for pests and diseases such as spider mites, aphids or mealybugs, which can damage foliage. Treatment with insecticidal soap might help if an infestation occurs.

6) Usage of the plant in outdoor settings:

Colocasia esculenta ‘Blue Hawaii’ is a beautiful plant that can be used in a variety of outdoor settings, such as residential gardens, parks, and botanical gardens. Here are some tips on how to use this plant in outdoor settings:

a) Soil and light requirements:

Colocasia esculenta ‘Blue Hawaii’ grows best in well-draining soils that are moist but not waterlogged, with plenty of organic matter.

It prefers full sun to partial shade, keeping in mind it can tolerate shade. b) Watering and fertilization:

The plant requires regular watering, especially during the summer months, to prevent the soil from drying out completely.

Fertilization with slow release or liquid fertilizer is recommended in an outdoor growing environment to enhance growth.

c) Companion planting:

Colocasia esculenta ‘Blue Hawaii’ can complement many other plants in a garden bed.

This plant’s large, colorful foliage can create an appealing contrast with the greenery of other plants, such as ferns or ornamental grasses, which can provide a suitable background. Some other plants that can complement colocasia esculenta ‘Blue Hawaii’ include impatiens, coleus, and caladiums.

d) Pots and containers:

Colocasia esculenta ‘Blue Hawaii’ can also be grown in pots or containers outdoors as long as they have good drainage holes. These plants can be moved around to change the outdoor spaces’ visual appeal and to protect them from extreme weather conditions such as frost or hail.

In conclusion, growing Colocasia esculenta ‘Blue Hawaii’ is a fantastic way to add unique botanical interest to both indoor and outdoor spaces. By providing the right environmental conditions, soil, watering and fertilization, and proper pest control, we can bring this tropical-looking plant into our homes and outdoor spaces.

The appropriate use of Colocasia esculenta ‘Blue Hawaii’ can add a delightful aesthetic appeal to any landscape while also creating a habitat for local wildlife. 7) Toxicity of the plant to pets and horses, humans

Colocasia esculenta ‘Blue Hawaii’ is a plant that is mildly toxic to humans, pets, and horses.

All parts of the plant contain calcium oxalate crystals, which can cause skin irritation, nausea, and vomiting if ingested or touched. Here are some factors to keep in mind regarding the toxicity of this plant:

a) Humans:

Ingesting Colocasia esculenta ‘Blue Hawaii’ can cause severe swelling of the mouth, tongue, and throat, which can result in breathing difficulties.

Skin contact can also cause itching and rashes. If a person ingests any part of the plant or experiences skin irritation, they should contact their doctor immediately.

b) Pets:

Dogs, cats, and other pets can also have adverse reactions to the Colocasia esculenta ‘Blue Hawaii.’ If ingested, it can cause vomiting, diarrhea, abdominal pain, and drooling. In severe cases, the respiratory system may be affected, which can lead to breathing difficulties.

Pet owners should avoid planting this plant near areas where pets roam and should maintain control over their pets to prevent accidental ingestion. c) Horses:

Although horses are not commonly affected by the plant, they are still susceptible to calcium oxalate toxicity.

Horses that ingest the Colocasia esculenta ‘Blue Hawaii’ can develop colic, followed by dehydration, depression, and in severe cases, convulsions. Horse owners should ensure their pasture or enclosure does not contain this plant to prevent accidental ingestion.

In conclusion, while the Colocasia esculenta ‘Blue Hawaii’ is a beautiful and unique plant with many benefits, its toxicity to humans, pets, and horses should not be underestimated. We would advise gardeners and pet owners to take appropriate precautions when handling this plant, such as wearing gloves, washing hands thoroughly after handling or avoid planting altogether.

In conclusion, Colocasia esculenta ‘Blue Hawaii’ is a fascinating and versatile plant that can add a touch of tropical beauty to both indoor and outdoor spaces. By understanding the characteristics, cultivation, care, propagation, and usage of this plant, gardeners and horticulturists can successfully grow and care for it.

However, it is essential to remember to take precautions when handling this plant due to its toxicity to humans, pets, and horses. With proper care and attention, the Colocasia esculenta ‘Blue Hawaii’ can thrive in any environment and bring an attractive and unique botanical interest to landscapes and indoor spaces.


1) Is Colocasia esculenta ‘Blue Hawaii’ safe for humans? No, all parts of the plant contain calcium oxalate crystals that can cause skin irritation, nausea, and vomiting if ingested or touched.

2) Can pets such as dogs and cats ingest Colocasia esculenta ‘Blue Hawaii’? Yes, dogs, cats, and other pets can have adverse reactions to the plant if ingested.

3) Is Colocasia esculenta ‘Blue Hawaii’ suitable for indoor or outdoor planting? Yes, the plant can be grown both indoors and outdoors in well-draining soil, with plenty of moisture and organic material.

4) What is the ideal temperature and light condition for growing Colocasia esculenta ‘Blue Hawaii’ indoors? The plant should be kept in bright, but indirect light, with temperatures between 65 to 75F.

5) How can I propagate Colocasia esculenta ‘Blue Hawaii’? The plant can be propagated through vegetative means such as splitting or trimming the tubers, corms, or rhizomes rather than seed propagation.

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