How To Plant Alocasia Corms [ Full Guide ]

Alocasia, commonly known as elephant ears, are tropical plants prized for their stunning foliage. Their dramatic, arrow-shaped leaves in various shades of green, often accented with striking veins, make them popular choices for indoor and outdoor gardens. While Alocasia can be propagated from seeds, division, or rhizomes, planting corms is a common and effective method for growing these eye-catching plants. In this comprehensive guide, we will take you through step-by-step instructions on how to successfully plant and care for Alocasia corms to ensure healthy growth and vibrant foliage.

Quick Answer: How To Plant Alocasia Corms

Before delving into the detailed process, here is a brief summary of the key steps involved in planting Alocasia corms:

  1. Choose the right spot: Select a location with well-draining soil and partial shade to protect the plants from direct sunlight.
  2. Prepare the soil: Ensure the soil is rich in organic matter and provides good aeration for optimal growth.
  3. Select the best corms: Look for healthy corms with no signs of damage or rot.
  4. Plant the corms: Position the corms in the soil with the growing points facing upward, then cover them lightly with soil.
  5. Provide care: Water the newly planted corms regularly and maintain a humid environment to support their establishment.

By following these steps and providing the right care, you can ensure the successful planting and growth of Alocasia corms.

Choosing The Right Spot For Planting Alocasia Corms

The first crucial step in planting Alocasia corms is selecting an appropriate spot for their growth. Alocasia plants thrive in partially shaded areas, making them suitable for both indoor and outdoor settings. When choosing a location for planting Alocasia corms, consider the following factors:

Light Conditions

Alocasia plants prefer bright, indirect light. While they can tolerate some direct sunlight, prolonged exposure to intense rays can scorch their leaves. Therefore, it is best to place them in locations with filtered sunlight or partial shade, such as beneath taller trees or on a porch with a shade cloth.

Temperature And Humidity

Alocasia plants thrive in warm and humid conditions, typically preferring temperatures between 65-85°F (18-29°C). They are sensitive to cold temperatures and should be protected from drafts and sudden temperature fluctuations. Indoor environments with adequate humidity, or outdoor areas with consistent moisture levels, are ideal for Alocasia growth.

Soil Drainage

Well-draining soil is essential for the successful cultivation of Alocasia corms. These plants are susceptible to root rot if the soil remains waterlogged, so it’s important to choose a planting spot with soil that drains efficiently. If planting in containers, make sure they have drainage holes to prevent water from accumulating around the corms.

Space And Air Circulation

When planting Alocasia corms outdoors, provide enough space between individual plants to allow for proper air circulation. Good air movement helps prevent the development of fungal diseases and encourages the healthy growth of the foliage.

Considering these factors will help you identify an optimal location for planting Alocasia corms, setting the stage for their successful establishment and growth.

Preparing The Soil For Alocasia Corm Planting

Once you have selected the right spot for planting Alocasia corms, it’s essential to prepare the soil to provide a nourishing environment for the plants to thrive. Alocasia plants prefer soil that is rich in organic matter and provides good aeration. Here’s how to prepare the soil for planting Alocasia corms:

Soil Composition

Alocasia plants thrive in a well-draining and moisture-retentive soil mix. A recommended soil mixture for Alocasia includes equal parts of peat moss, perlite, and a well-draining potting mix. This combination provides the necessary aeration, moisture retention, and nutrient-rich environment for the corms to establish and grow.

Soil Ph

The ideal soil pH for Alocasia plants ranges between 5.5 to 6.5, slightly acidic to neutral. Testing the soil pH using a simple soil test kit can help determine if any pH adjustments are necessary. Adding organic matter, such as compost or well-rotted manure, can help balance the pH levels and improve the overall soil quality.

Soil Amendments

Incorporating organic matter into the soil, such as compost, aged manure, or leaf mold, can enhance its fertility and structure. These organic amendments also contribute to the retention of moisture and nutrients, promoting optimal conditions for Alocasia corm growth.

Soil Aeration

To improve soil aeration, consider adding perlite or coarse sand to the soil mixture. These amendments help prevent compaction, promote root development, and facilitate the movement of oxygen to the root zone, essential for the healthy growth of Alocasia plants.


After planting the Alocasia corms, apply a layer of organic mulch around the base of the plants to conserve moisture, regulate soil temperature, and suppress weed growth. Mulching also contributes to the overall health of the soil and provides essential nutrients as it breaks down over time.

By preparing the soil to meet the specific requirements of Alocasia plants, you can create an environment that encourages strong, healthy growth and vibrant foliage.

How To Select The Best Alocasia Corms

Selecting healthy, high-quality corms is paramount for the successful establishment of Alocasia plants. When choosing corms for planting, look for the following characteristics to ensure that you are starting with the best possible material for growth:

Corm Size And Firmness

Choose corms that are plump, firm, and free from soft spots or signs of decay. Larger corms generally have more stored energy reserves, which can support robust initial growth. However, smaller corms can also be viable if they are firm and healthy.

Signs Of Damage Or Disease

Inspect the corms closely for any signs of damage, such as cuts, bruises, or mold. Avoid planting damaged corms, as they are more likely to succumb to rot and disease. Healthy corms should have smooth, intact surfaces without any visible blemishes.

Sprouting Points

Look for corms with visible sprouting points, also known as eyes or growing points. These are small, raised areas on the corm surface from which new growth will emerge. Select corms with multiple sprouting points, as they are more likely to produce vigorous shoots and abundant foliage.

Prioritizing Quality Over Quantity

While it can be tempting to purchase a large number of corms for planting, it’s important to prioritize quality over quantity. Investing in fewer, high-quality corms ensures a higher likelihood of successful establishment and healthy growth.

By carefully choosing the best Alocasia corms based on these criteria, you can set the stage for a flourishing and visually striking plant display.

Planting Alocasia corms is a rewarding endeavor that can lead to the establishment of stunning, tropical foliage in your garden or indoor space. By choosing an appropriate location with partial shade and well-draining soil, and carefully preparing the soil to provide the necessary nutrients and aeration, you can create an ideal environment for Alocasia corms to thrive. Additionally, selecting high-quality corms with firm, healthy characteristics ensures a strong foundation for the plants' growth. With proper care and attention to detail, you can look forward to the emergence of vibrant, arrow-shaped leaves that are characteristic of these captivating plants.

Follow the guidance provided in this comprehensive guide, and you'll be well-equipped to plant Alocasia corms with confidence, setting the stage for a flourishing display of tropical beauty in your garden or living space.

Tools And Equipment Needed For Planting Alocasia Corms

Alocasia plants, also known as Elephant’s Ears, are prized for their stunning foliage and unique appearance. These tropical plants are native to Southeast Asia and belong to the Araceae family. Alocasia corms are bulb-like underground structures that store nutrients and water for the plant. Planting Alocasia corms is an essential step in starting and maintaining a healthy Alocasia plant.

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Before you begin planting Alocasia corms, make sure you have the following tools and equipment:

  1. Alocasia corms: Purchase healthy corms from a reputable nursery or garden center. Select corms that are firm, without any soft spots or signs of decay.
  2. Pot or container: Choose a pot or container with drainage holes. Ensure that it is large enough to accommodate the size of the corm and allow room for growth.
  3. Well-draining potting mix: Alocasia plants prefer well-draining soil. You can create a suitable potting mix by combining equal parts peat moss, perlite, and coconut coir.
  4. Watering can or spray bottle: You will need a watering can or spray bottle to provide moisture to the corms during the planting process and ongoing care.
  5. Fertilizer: Alocasia corms benefit from a balanced fertilizer, such as a 10-10-10 or 20-20-20 formula.
  6. Gardening gloves: Protect your hands while handling the corms by wearing gardening gloves.
  7. Small gardening trowel: A small gardening trowel will be useful for digging holes and placing the corms in the pot.

Planting Process Of Alocasia Corms In Detail

Now that you have gathered all the necessary tools and equipment, let’s dive into the planting process of Alocasia corms.

  1. Choose the right location: Alocasia plants thrive in bright, indirect light. Select a location in your home or garden with ample sunlight. Avoid placing them in direct sunlight, as it can scorch their leaves.

  2. Prepare the pot or container: Ensure that the pot or container you have chosen has drainage holes at the bottom. This will prevent water from accumulating and causing root rot. Cover the drainage holes with a piece of mesh or a few pebbles to prevent the soil from escaping.

  3. Prepare the potting mix: Alocasia plants prefer well-draining soil. Create a suitable potting mix by combining equal parts peat moss, perlite, and coconut coir. This mixture provides excellent drainage while retaining enough moisture for the corms.

  4. Plant the corms: Take the corms and inspect them for any signs of damage or decay. If you notice any soft spots or rotten sections, discard those corms as they may not grow. Use a small gardening trowel to dig a hole in the potting mix. The hole should be deep enough to accommodate the corm without covering it completely. Place the corm in the hole, ensuring that the top part of the corm is just slightly above the soil surface.

  5. Fill the pot with potting mix: Once the corms are in place, gently fill the pot with the remaining potting mix. Ensure that the corms are covered with a thin layer of soil, leaving the top part exposed.

  6. Water the corms: After planting the corms, it’s essential to provide them with moisture. Use a watering can or spray bottle and lightly water the soil until it feels evenly moist. Avoid overwatering, as it can lead to rotting of the corms.

  7. Place the pot in a suitable location: Find a spot that provides the right amount of sunlight for your Alocasia plants. Make sure the temperature is warm and consistent. Avoid placing the pot near drafts or in excessively cold areas.

  8. Monitor the growth: Alocasia corms usually take a few weeks to sprout. During this time, keep an eye on the soil moisture and ensure it remains slightly moist. It’s normal for the corms to take some time before they start growing, so be patient and wait for signs of new growth.

  9. Transplant as needed: Once the Alocasia plants have grown and established themselves in the pot, you may need to transplant them to a larger container. This will provide them with more room for growth and prevent the plant from becoming root-bound.

Watering Requirements For Alocasia Corms

Proper watering is crucial for the health and growth of Alocasia corms. Here are some watering guidelines to follow:

  1. Soil moisture: Alocasia corms prefer slightly moist soil. Avoid overwatering, as it can lead to root rot and other fungal diseases. Check the moisture levels in the soil by sticking your finger about an inch deep into the soil. If it feels dry at that depth, it’s time to water.

  2. Watering frequency: The frequency of watering depends on various factors such as the climate, pot size, and the time of year. In general, water your Alocasia corms when the top inch of the soil feels dry. During hot summer months, you may need to water more frequently, while in cooler months, you may need to reduce the frequency.

  3. Watering method: Alocasia corms prefer to be watered from the bottom. Fill a tray with water and place the pot on the tray. The pot will absorb water through the drainage holes, allowing the roots to take up the moisture. Leave the pot in the tray for about 20-30 minutes and then remove it. Discard any excess water that remains in the tray.

  4. Avoid waterlogging: Ensure that the pot has proper drainage to prevent waterlogging. If the soil becomes waterlogged, it can lead to root rot. If you notice any signs of yellowing leaves or a foul smell, it is an indication of overwatering. Adjust your watering schedule accordingly to prevent further damage to the plant.

Applying Fertilizers To Alocasia Corms

Fertilizing Alocasia corms is essential to promote healthy growth and foliage. Here are some guidelines for applying fertilizers:

  1. Choosing the right fertilizer: Alocasia corms benefit from a balanced fertilizer with equal proportions of nitrogen (N), phosphorus (P), and potassium (K). Look for a fertilizer with a 10-10-10 or 20-20-20 NPK ratio. These fertilizers provide a balanced nutrient profile for the plant.

  2. Frequency of fertilization: Alocasia corms should be fertilized every 2-4 weeks during the growing season, which is typically spring and summer. Reduce the frequency to once a month or every 6-8 weeks during fall and winter when the plant is in a dormant phase.

  3. Dilute the fertilizer: Always dilute the fertilizer according to the instructions on the packaging. Over-fertilization can lead to nutrient burn and damage the plant. Mix the fertilizer with water in the recommended proportions before applying it to the soil.

  4. Application method: Apply the diluted fertilizer to the soil around the base of the plant, taking care to avoid direct contact with the leaves. Water the soil after applying the fertilizer to help distribute it evenly.

  5. Organic alternatives: If you prefer organic fertilizers, you can use compost tea or diluted fish emulsion to nourish your Alocasia corms. These natural options provide essential nutrients without the risk of chemical buildup in the soil.

Planting Alocasia corms is an exciting step towards growing these stunning tropical plants. By following the planting process, providing adequate watering, and applying the right fertilizers, you can ensure healthy growth and vibrant foliage. Remember to monitor the moisture levels in the soil, avoid overwatering, and adjust your watering schedule based on the plant’s needs. With proper care and attention, your Alocasia corms will thrive and bring beauty to your home or garden. Happy gardening!

How To Plant Alocasia Corms

Alocasia, commonly known as elephant ear plants, are highly popular among plant enthusiasts for their large, tropical leaves and striking appearance. They can be grown indoors or outdoors, adding a touch of elegance and beauty to any space. Alocasia plants reproduce through corms, which are modified stem structures that store nutrients and energy for the plant. Planting Alocasia corms requires careful consideration of the planting conditions, proper care, and potential pests and diseases that may affect the plants.

  1. Choosing the Right Time and Location:
    Before diving into the planting process, it is crucial to choose the right time and location for your Alocasia corms. These plants thrive in warm and humid conditions, so it is best to plant them in spring or early summer when the temperatures are mild. Select a location that receives bright, indirect sunlight or partial shade. Alocasia plants prefer well-draining soil, so make sure the planting area provides adequate drainage.

  2. Preparing the Corms:
    Before planting, inspect the Alocasia corms for any signs of damage or disease. Healthy corms will be firm, smooth, and free of blemishes. If you notice any soft spots, rot, or discoloration, discard those corms as they may affect the overall health of the plantings. It is essential to prepare the corms by giving them a pre-planting treatment called "curing." Curing involves laying the corms in a warm and dry area for a few days to allow the cut surfaces to dry and callus over. This helps prevent rotting and fungal infections.

  3. Planting Depth and Spacing:
    Alocasia corms should be planted with the pointed side facing upwards. Dig a hole in the planting area that is two to three times the depth of the corm. Place the corm in the hole and backfill with soil, ensuring that the top of the corm is just below the soil surface. The planting depth should be around 2-3 inches (5-7.5 cm) deep. Space the corms about 12-18 inches (30-45 cm) apart to allow for adequate growth and development.

  4. Watering and Mulching:
    After planting the corms, water the area thoroughly to settle the soil around the corm and provide moisture for the plant’s roots. Alocasia plants require consistent moisture, so regular watering is essential. However, do not overwater the plants, as excessive moisture can lead to root rot. Applying a layer of organic mulch around the plants can help retain moisture, regulate soil temperature, and suppress weed growth, creating an optimal growing environment.

  5. Providing Structural Support:
    Alocasia plants can grow quite large and may require structural support to prevent their leaves from drooping or breaking. As the plants grow, installing stakes or gentle trellises can help support the stems and foliage, ensuring they grow upright. Secure the plants to the support with soft ties or twine, being careful not to damage the stems or leaves.

  6. Regular Maintenance:
    Once planted, it is crucial to provide regular maintenance to your Alocasia corms. This includes regular watering, monitoring for pests and diseases, and providing suitable growing conditions. Regularly check the soil moisture levels and water as needed, aiming to keep the soil consistently moist but not soaking wet. Inspect the plants for any signs of pests or diseases and take appropriate action to prevent any damage. Additionally, monitor the overall growth and health of the plants, making adjustments to their care as necessary.

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How To Care For Alocasia Corms Post-Planting

Caring for Alocasia corms after planting involves providing the plants with proper watering, feeding, and maintaining suitable environmental conditions. Here are some essential tips for post-planting care:

  1. Watering:
    Alocasia plants require regular watering to maintain their moisture levels. Ensure that the soil is consistently moist, but not waterlogged. Stick your finger into the soil to a depth of about an inch (2.5 cm) to check the moisture. If it feels dry at that depth, it’s time to water. On average, watering every 2-3 days should be sufficient, but adjust the frequency based on environmental conditions and the moisture retention capabilities of your soil.

  2. Fertilizing:
    To promote healthy growth, feed your Alocasia plants with a balanced, water-soluble fertilizer. Use a fertilizer with an N-P-K ratio of 10-10-10 or 20-20-20, applying it according to the package instructions. Start fertilizing when the plants begin actively growing, usually in spring, and continue every two weeks throughout the growing season. Avoid over-fertilizing, as this can lead to nutrient burn and damage the plants.

  3. Temperature and Humidity:
    Alocasia plants prefer warm and humid environments. Aim to maintain temperatures between 65-85°F (18-29°C) during the day and above 55°F (12°C) at night. If growing indoors, place the plants in a location with consistent temperatures and avoid cold drafts. To increase humidity levels, mist the leaves regularly or place a tray of water near the plants to allow evaporation. Grouping plants together can also create a microclimate with higher humidity levels.

  4. Lighting:
    Alocasia plants thrive in bright, indirect sunlight or partial shade. Excessive direct sunlight can scorch the leaves, so it is essential to protect them from intense light. Place your plants near a window with filtered sunlight or use sheer curtains to diffuse the light. If growing outdoors, choose a location with dappled shade or provide shade cloth to shield the plants from direct sunlight.

  5. Pruning and Propagation:
    Regular pruning helps maintain the aesthetic appeal of Alocasia plants and prevents overcrowding. Remove any dead or damaged leaves, and trim back any leggy or overgrown stems. You can propagate Alocasia plants by division during the spring or early summer. Carefully separate the offshoots from the main plant, ensuring that each division has its own corm and a few healthy roots. Plant the divisions following the same planting instructions mentioned earlier.

Dealing With Pests And Diseases For Alocasia Corms

While Alocasia plants are generally resilient, they can still fall prey to various pests and diseases. Prompt identification and treatment are crucial to prevent significant damage. Here are some common pests and diseases that may affect Alocasia corms and how to deal with them:

  1. Spider Mites:
    Spider mites are tiny, sap-sucking pests that often infest Alocasia plants. They can cause yellowing, stippling, and browning of the leaves, as well as a fine webbing. To control spider mites, regularly mist the leaves to increase humidity and discourage infestation. If the infestation persists, use an insecticidal soap or an organic neem oil spray, following the product instructions.

  2. Mealybugs:
    Mealybugs are soft-bodied, white insects that can cluster on the undersides of leaves and along stems. They feed on plant sap, causing wilting, yellowing, and leaf distortion. To eliminate mealybugs, you can use a cotton swab dipped in rubbing alcohol to remove them manually. Alternatively, treat the plants with insecticidal soap or neem oil spray.

  3. Scale Insects:
    Scale insects are small, immobile pests that attach themselves to the plant and suck sap from its tissues. They appear as small bumps or shells on the leaves and stems. To control scale insects, gently wipe them off with a soft cloth soaked in soapy water or use a horticultural oil spray labeled for scale control.

  4. Leaf Spot Diseases:
    Leaf spot diseases, such as Anthracnose and Cercospora leaf spot, can affect Alocasia plants, causing dark spots or lesions on the leaves, yellowing, and leaf drop. To manage leaf spot diseases, remove and dispose of infected leaves promptly. Ensure good air circulation around the plants by spacing them adequately, avoiding overhead watering, and providing well-draining soil. Fungicides labeled for leaf spot control may also be used if the infection is severe.

  5. Root Rot:
    Root rot is a fungal disease caused by overwatering or poorly draining soil. It can lead to yellowing, wilting, and decay of the plant’s roots. To prevent root rot, ensure that the soil is well-draining and avoid overwatering. If you suspect root rot, carefully remove the affected plant from the soil, trim away the infected roots, and repot the plant in fresh, well-draining soil.

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Harvesting Alocasia Corms

Alocasia plants can also be cultivated for their edible corms, which can be harvested and used in different culinary preparations. Here’s a step-by-step guide on how to harvest Alocasia corms:

  1. Determining Harvest Readiness:
    Alocasia corms are typically harvested when the plants enter their dormant phase, usually in late fall or early winter. When the leaves start yellowing and dying back, it is a sign that the plants are preparing for dormancy. Avoid harvesting the corms before this stage, as they will not have reached their maximum size and nutritional content.

  2. Digging and Cleaning:
    Carefully dig around the base of the plant, taking care not to damage the corms. Use a garden fork or shovel to loosen the soil. Once the corms are exposed, gently lift them out of the ground, making sure to remove any excess soil clinging to them. Be careful not to bruise or cut the corms during this process.

  3. Drying and Curing:
    After harvesting, gently remove any loose dirt from the corms and allow them to air dry for a few days in a warm, dry area. This drying process helps remove excess moisture and promotes curing. Once dried, trim off any remaining leaves or roots.

  4. Curing and Storage:
    To cure the harvested corms, place them in a cool, dry, and well-ventilated location for several weeks. This allows the corms to further dry out and develop a protective outer layer. After curing, store the corms in a cool and dark place, such as a basement or cellar, in paper bags or mesh bags to prevent rot and discourage sprouting.

Tips And Tricks For Successful Alocasia Corm Planting

Here are some additional tips and tricks to ensure successful growth and cultivation of Alocasia corms:

  1. Start Small: If you are new to Alocasia cultivation, start with a smaller variety that is easier to manage, such as Alocasia amazonica or Alocasia cuprea. These varieties are more forgiving and adapt well to indoor environments.

  2. Provide Adequate Drainage: Alocasia plants do not tolerate waterlogged soil. Ensure proper drainage by adding organic matter or perlite to the soil mix, or consider planting them in raised beds or containers with drainage holes.

  3. Regularly Rotate the Plant: To promote even growth and prevent the plant from leaning towards a light source, regularly rotate the container or change the plant’s orientation. This helps maintain a balanced and uniform appearance.

  4. Consider Terrarium Cultivation: Alocasia plants can thrive in enclosed terrarium environments. A terrarium provides a naturally humid atmosphere, making it ideal for Alocasia cultivation. Ensure proper ventilation to prevent high humidity levels that could encourage fungal growth.

  5. Avoid Cold Drafts: Alocasia plants are sensitive to cold drafts and low temperatures. Avoid placing them near doors, windows, or areas with significant temperature fluctuations, as this can cause stress and damage to the leaves.


With their impressive foliage and unique appearance, Alocasia plants have become a beloved addition to many indoor and outdoor gardens. By following the proper planting techniques, providing adequate care, monitoring for pests and diseases, and harvesting corms when the time is right, you can enjoy the beauty and lushness of these tropical plants. Implement the tips and tricks outlined in this guide for successful Alocasia corm planting and cultivate a thriving collection of Alocasia plants in your own space.


What Are Alocasia Corms?

Alocasia corms are underground plant structures that store nutrients and energy for the plant to survive during dormant periods. They are similar to bulbs and are essential for the growth and development of alocasia plants.

When Is The Best Time To Plant Alocasia Corms?

The best time to plant alocasia corms is in the spring when the soil has warmed up and the chance of frost has passed. This allows the corms to establish and start growing before the colder months.

How Do I Prepare The Planting Site For Alocasia Corms?

Alocasia corms prefer well-draining soil with plenty of organic matter. The planting site should be cleared of any debris and weeds. You can also add compost or other organic matter to the soil to improve its texture and provide nutrients for the corms.

How Do I Plant Alocasia Corms?

Place the corms in the planting site with the pointed end facing upwards and cover them with 2-3 inches of soil. Ensure that the corms are spaced at least 12 inches apart to allow for proper growth and development.

How Often Should Alocasia Corms Be Watered?

Alocasia corms should be kept consistently moist, but not waterlogged. Water them once a week, or more frequently during hot and dry weather. Avoid overwatering, as this can lead to corm rot.