Giant Taro Species Profile & Care Guide

The Giant Taro, often acclaimed for its impressive stature and striking foliage, is a plant species that commands attention.

Whether situated in a garden or a pot indoors, this plant is an awesome presence that adds to any environment’s beauty and appeal.

In this article, we’ll delve into the profile, care guide, and other fascinating insights about this giant beauty.

Giant Taro

Profile Overview

  • Common Name: Giant Taro
  • Scientific Name: Alocasia macrorrhizos
  • Family: Araceae
  • Origin/Native Region: Southeast Asia and Eastern Australia
  • Growth Habit: Herbaceous perennial with a robust, rhizomatous structure. The Giant Taro thrives in tropical environments and can reach a substantial size, presenting large, glossy, heart-shaped leaves that make a striking statement in any garden or indoor setting. The plant features a strong, upright habit, with leaves ascending to the sun while the rhizomatous root system sprawls beneath the soil, giving the Taro its distinctive and impressive size.


The Giant Taro (Alocasia macrorrhizos) stands out in any setting due to its robust and exotic appearance. Its main highlights include large, elongated heart-shaped leaves, impressive size, and a unique stem structure.

The color variation across different parts further adds to its aesthetic appeal. Each part of the plant, from its leaves to the stem, is characterized by distinctive features which we will explore in depth.

Understanding the plant’s appearance is crucial for identification, optimal care, and enhancing its ornamental appeal.

Leaf Size

The leaves of the Giant Taro are quite large and contribute significantly to its majestic appearance. These lush, tropical leaves range from 2 to 3 feet in length and 1.5 to 2.5 feet in width.

They are significantly bigger than the leaves of many other houseplants. The large leaf size can make this plant somewhat challenging to accommodate indoors, but it also adds to its visual appeal and makes it a unique addition to any green space.

In an outdoor setting where it has room to grow, the Giant Taro’s large leaves can create a beautiful, leafy canopy.

Leaf Shape

The leaf shape of the Giant Taro, scientifically known as Alocasia macrorrhizos, is one of its most distinctive features. This species boasts large, peltate (shield shaped) leaves that can be up to 1-2 meters in size.

The leaves have a triangular-ovate shape and are deeply lobed, adding to the plant’s distinct appearance. These broad, heart-shaped leaves also have noticeably pronounced veins that add a level of texture and depth to the plant’s visual appeal.

Remember to handle the leaves with care as well, as their size and structure can make them quite delicate, particularly when the plant is young.

Leaf Color

The Giant Taro, scientifically known as Alocasia macrorrhizos, exhibits lush and vibrant foliage that adds character to any space. The leaves of the Giant Taro are typically a luscious, glossy green on the upper surface.

However, you might notice a subtle bluish hue on younger leaves under certain lighting conditions. On the undersides, the leaves present a light green color often dashed with traces of purple or burgundy, especially along the veins.

This striking color combination gives the Giant Taro a visual interest, making it a favored choice in landscaping and indoor decoration among plant enthusiasts.

Stem Characteristics

The stem of a Giant Taro is equally as impressive as its foliage. It has a sturdy, erect, cylindrical structure that adds to the overall interesting appearance of the plant.

Often, you may notice the stem being of green or sometimes brown in color, with a coarse texture similar to that of a tree bark. It forms a beautiful contrast with the dark green leaves.

For mature plants, the stem can reach up to several feet in length. This structural characteristic allows the Giant Taro to stand tall and support the massive weight of its broad leaves.

Mature Size

The mature size of the Giant Taro largely depends on its growing conditions, with optimal factors allowing it to reach impressive sizes. In terms of height, this plant can usually reach between 1 to 2 meters, but under ideal conditions, it can grow as tall as 5 meters.

The leaves, which are the plant’s most notable feature, can expand to around 1 to 2 meters in width. This substantial size makes the Giant Taro a grand feature in any landscape, and as a pot plant, it’s sure to command attention.

However, its substantial size needs space and should be considered before planting.

Care Requirements

Caring for a Giant Taro plant requires a certain amount of commitment and plant knowledge, as they have specific light, water, humidity, temperature, and soil requirements.

These tropical plants need full to partial shade, regular watering, high humidity, warm temperatures, and well-draining soil with a slightly acidic to neutral pH for optimal health and growth.

Understanding and meeting these care necessities will help your Giant Taro thrive, showcasing its decorative foliage while preventing common plant issues such as pests or diseases.

Light Needs

The Giant Taro, while quite versatile, primarily thrives in bright, indirect light. Too much direct sunlight can scorch its large, delicate leaves, causing them to yellow and curl.

If you’re growing this plant indoors, find a spot in your home that gets abundant ambient light – near a North or East-facing window would be optimal.

If you live in a more shaded area, fret not. The Giant Taro can tolerate low-light conditions, though its growth may be slightly stunted. The key is to provide consistent, diffused light for the best growth and health of your Giant Taro.

Watering Frequency

The Giant Taro prefers consistent moisture and should not be allowed to dry out completely. Generally, watering should occur when the top inch of soil feels dry to the touch.

However, be careful not to overwater, as this can lead to root rot. It is better to keep your Giant Taro slightly too dry rather than too wet. Depending on the conditions, you might need to water your plant between once per week to once every two weeks.

Humidity Preferences

The Giant Taro is a plant that thrives in high humidity settings, mimicking its native tropical climate. Humidity levels around 60-80% are ideal for this plant.

This can often be accomplished by placing the plant on a pebble tray filled with water, or employing the use of a humidifier. It’s equally important to keep the plant in well-ventilated conditions to deter mold growth.

If you natural home environment is dryer, regular misting with lukewarm water can help maintain the necessary moisture levels. In overly dry environments the Giant Taro may exhibit browning leaves as an indication of insufficient humidity.

Temperature Range

The Giant Taro, being a tropical plant, thrives best in warm temperatures. It prefers a temperature range between 65°F (18°C) and 85°F (29°C), and can tolerate temperatures as low as 50°F (10°C) albeit not for protracted periods.

This plant may suffer damage or potentially die if exposed to freezing temperatures. Additionally, sudden and extreme changes in temperature should be avoided as they can stress the plant.

Maintaining a consistent warm temperature is crucial for the healthy growth and development of the Giant Taro. So, if you live in a temperate region, consider growing your Giant Taro indoors, in a conservatory, or greenhouse where temperature can be controlled.

Soil Type & pH Preferences

For ideal growth, the Giant Taro prefers loamy or sandy soil that is well-drained. This plant isn’t particularly fussy and can tolerate a wide range of soil types, including clay.

The ideal pH range for Giant Taro is between 5.5 and 6.5, slightly acidic to neutral. However, it’s also capable of thriving in slightly alkaline soil.

If your soil is too acidic, you can add lime to raise the pH; if it’s too alkaline, adding sulfur or organic compost can lower the pH.

Always ensure your Giant Taro is planted in rich, nutrient-dense soil for the best results.

Growth & Propagation

With its tropical origins, the Giant Taro has a decent growth rate, especially in ideal conditions. The plant grows from tubers, planting them in well-drained soil can initiate the process.

These tubers can be easily propagated, separating them carefully at the growing season can yield more plants. Usually, the growth is most active during summer and spring seasons.

When it comes to potting and repotting, it needs larger pots and should be done during the early growth stage. A large pot facilitates the plant to reach its optimal size easily while ensuring the roots are not getting suffocated.

Growth Rate

The Giant Taro’s growth rate is quite rapid under optimal conditions. It’s one of the definitive traits that distinguishes it from other species in the genus.

Once well-established, the plant quickly sprouts new leaves and grows at a steady pace. It is possible for the plant to attain a significant height of several feet within one growing season, provided it is properly cared for.

The plant flourishes from late spring to early summer, marking its active growing period. However, the growth rate can vary, depending on the given care and environmental conditions. It’s essential to provide appropriate care for the plant to maintain its robust growth.

Propagation Methods

Propagation of the Giant Taro is usually done through the ‘suckers’ or offsets that grow at the base of the plant. These can be carefully removed and replanted to form new plants.

Another common method of propagation is by dividing the root ball of an adult plant during the dormant period. Each section of root should have at least one growth node.

Propagation via seed is also possible, but it can be a challenging process and success rate is typically low as seed viability is not very high.

Complete care should be taken while propagating to ensure the success of the new plant.

Season of Active Growth

The Giant Taro is a tropical plant, hence its primary growth season naturally falls during the warm months. The plant exhibits its most vigorous growth between spring and summer.

This is the prime period when the Giant Taro grows rapidly and produces fresh, new leaves. It’s essential to provide the plant with ample water, nutrients, and care during this active growth season to support its growth and health.

In the colder months, the growth rate of the Giant Taro slows down substantially, and it might enter a period of dormancy depending on the extremity of the cold.

Potting and Repotting Recommendations

For the proper growth of the Giant Taro, it is paramount to understand the suitable potting and repotting recommendations.

Always begin with a large and heavy pot as Taro tends to grow heavy and massive. For young plants, ensure to repot annually to encourage growth, shifting to a larger pot each time.

During repotting, take care to remove old, spent soil and replace it with fresh soil concoction rich in organic matter. Always ensure ample space for the roots to breathe and grow.

Do remember, the plant’s energetic growth necessitates roomy containers and well-drained soil conditions.

Potential Issues

While the Giant Taro is generally a robust plant, it can still encounter some problems that can hinder its growth and overall blooming.

In this section, we will collectivize the potential adversities that can be encountered by this splendid foliage. These issues commonly include various pests and diseases that can potentially infest the plant.

Additionally, it’s important to be informed about possible sensitivities the Giant Taro might have to specific environmental conditions.

Proper management of these issues can make your plant-keeping experience much smoother and fulfilling and can thus lead to a healthier, more enchanting Giant Taro.

Common Pests

Giant Taro, like many plants, can be susceptible to a variety of common pests. These can include spider mites, aphids, and mealybugs.

Spider mites are tiny arachnids that feed on the plant’s sap, typically residing on the underside of leaves. Aphids are small, soft-bodied insects that can siphon nutrients from the Giant Taro, causing yellowing and withering of the leaves.

Mealybugs are small insects covered in a white, waxy substance. They feed similarly to aphids, but also produce honeydew which can invite fungal growth. Regular inspection and prompt action will protect your Giant Taro from damage.

Common Diseases

Giant Taro plants are relatively hardy, however, they can occasionally fall victim to several common diseases. The most prevalent ones include leaf blight and root rots.

Leaf blight, often caused by a fungus, appears as dark, water-soaked spots on the leaves that gradually enlarge. Root rots, mainly induced by excessive watering and poor drainage, can cause the plant to weaken and may eventually kill it.

To manage these diseases, ensure proper irrigation and keep the plant in a well-drained environment. Application of appropriate fungicides and removal of infected parts may also be necessary to keep your Giant Taro healthy.

Other Sensitivities

The Giant Taro, like many plants, can be sensitive to specific environmental cues or stressors, beyond the typical pests and diseases.

These may include dramatic shifts in lighting, over or under-watering, extreme temperatures or significant changes in humidity conditions.

In some cases, the Giant Taro may exhibit signs of nutrient deficiency if the soil condition is not optimal. It could also get sunburnt if exposed to intense, direct sunlight for prolonged periods.

Understanding these sensitivities can help in adjusting the plant’s care to maintain its health and vitality, thereby avoiding undesired leaf discoloration, wilting, or potential stunting of growth.

Special Features & Uses

The Giant Taro is a plant brimming with unique characteristics that redefine the aesthetics of any space it inhabits. It is often used as a striking decorative piece due to its oversized, elegant leaves and spectacular height.

However, one must be cautious of its toxicity levels, as the plant can be harmful if consumed in an incorrect manner. In this section, we’ll delve further into the Giant Taro’s unique characteristics, its uses in decoration, and discuss its toxicity.

Unique Characteristics

The Giant Taro is well-known for its massive leaves, which add an exotic appeal to any environment. This characteristic makes the plant stand out among others.

Another unique feature is its thick, stout stem, which often gives out an elephant foot look. Furthermore, the plant’s ability to thrive under various conditions and its potential for staying healthy indoors make it a unique choice for plant lovers seeking a touch of nature within their indoor spaces.

Though the actual size of the plant relies on care conditions, the potential size it can aspire to is an unignorable unique trait.

Decorative Use

The Giant Taro, with its unique foliar structure and grand size, is an impressive addition to any indoor or outdoor landscape. Its large, robust leaves of deep greens create a vibrant visual accent, offering a tropical feel.

It serves as a striking focal point in a large room or conservatory and enhances the aesthetic appeal of gardens. This plant provides a lush, forest-like ambiance which both soothes and invigorates the senses.

Therefore, it has a great decorative value and is a popular choice for botanical gardens, larger terrariums, and as a solitary houseplant for spacious interiors.


The Giant Taro is classified as mildly toxic due to the presence of calcium oxalate in its tissue. If ingested in large amounts, it can cause serious illness in humans and pets.

The most common symptoms include irritation of the mouth and throat, swelling of the throat, difficulty swallowing, and stomach upset. Avoid any contact of the plant sap with eyes as it may cause severe irritation.

In some cases, exposure to sunlight after handling the plant can lead to skin inflammation. Always handle the Giant Taro with care and caution, and ensure it’s out of reach of young children and pets.

Additional Tips & Tricks

In caring for the Giant Taro, some extra knowledge can prove highly beneficial. The application of a slow-release fertilizer every few months during the active growth season aids in maintaining vibrant, healthy leaves.

Regular pruning, especially of older leaves, helps to encourage new growth. In terms of support, while the Giant Taro grows upright and generally doesn’t require additional support, some people find it helpful to use stakes to maintain shape particularly when the plant is young or if grow conditions aren’t ideal.

These tips, along with the fundamental care guide, can help you achieve a thriving Giant Taro plant.

Fertilization Recommendations

For optimal growth and development of your Giant Taro, fertilization is a crucial element. These plants are heavy feeders, therefore a balanced, water-soluble fertilizer, rich in nitrogen, potassium, and phosphorous, should be used.

Fertilizer should generally be applied every two weeks during the peak growing season (spring and summer) and less frequently during dormant periods (fall and winter).

When applying fertilizer, always follow the instructions on the packaging. Over-fertilization can severely damage the plant and impact its overall health. Make sure to water thoroughly after fertilization to help the soil absorb the nutrients.

Pruning & Maintenance

Pruning giant taro isn’t necessary for its health, but it does help to control its size and keeps the plant looking its best. If you notice a leaf turning yellow or brown, cut it off at the base of the stalk to encourage new growth. Regular cleaning by wiping the leaves with a damp cloth keeps them glossy and free from dust.

Make sure to inspect for pests during this regular maintenance routine. Repotting every 2-3 years allows the plant to grow comfortably, and maintaining the right temperature and humidity levels will ensure a thriving Giant Taro plant.

Support Structures

For the Giant Taro, support structures are not absolutely necessary due to the inherent sturdiness of the plant. However, to ensure optimal growth and development, especially in potted or indoor environments, you may choose to provide additional support.

This can be done through the use of staked rods or wooden planks gently tied to the stem of the plant. This helps maintain an upright posture and encourages a healthy growth, particularly effective when your Taro’s leaves get larger.

It’s advisable to install these supports early in the plant’s life to avoid interrupting or damaging mature growth.

Alocasia   Updated: December 5, 2023
avatar Hi, I'm Amy, a devoted horticulturist and the creator of, where I use my expertise to help beginners foster their green thumbs. My blog is a vibrant community where I unravel the complexities of gardening and share my profound love for nature.
Leave a Comment

Your email address will not be published. Required fields are marked *