Though quite rare, Alocasia can produce white or green flowers in the early spring or summer. Like other members of the Alocasia genus, It is important to note that these plants are toxic to both pets and people, so take precautions to keep them away from curious pets or children.
Light
When grown outside, Alocasia Regal Shield will thrive in partial sun, or dappled light, such as on the edge of a covered patio or balcony. Morning sun is preferred, as afternoon sun can be intense and can cause scorched leaves. When grown inside, these plants do best near the brightest window in your home, such as a south or north-facing window. This will provide them with the bright, indirect lighting they need. Be sure to rotate the pot a bit every week to ensure even growth, as the plant will inevitably turn towards the light.
Soil
The Alocasia Regal Shield prefers light, loamy, slightly moist soil. It is important that the soil is not too heavy, since this can cause water retention and lead to root rot problems. Soil that is neutral to slightly acidic is preferred.
Water
Alocasia Regal Shield enjoys moderate amounts of water and does best when the top few inches of the soil is allowed to dry out in-between watering. The frequency of watering will depend on the environment, how humid the area is, and how much sun the plant gets. Check the top few inches of soil with your finger, only providing more water if it feels dry.
Temperature and Humidity
As a tropical plant, Alocasia Regal Shield thrives in warm, humid conditions. It enjoys high humidity levels and temperatures above 55 degrees Fahrenheit. When planted outdoors, it can be grown in zones 9 to 11. For indoor plants, be sure to give them plenty of humidity through misting or humidifiers. Keep them away from harsh drafts, as this can dry out the plant.
Fertilizer
Alocasia Regal Shield benefits from monthly fertilizing during the growing months. Use a well-balanced, light fertilizer to keep it healthy. Just be sure to use high-quality fertilizer, as cheaper fertilizers may contain high amounts of salt that can damage the plant. Alternatively, worm castings or fresh compost can be used to add nutrients to the soil in the spring. Be sure to stop fertilizing in the fall and winter as the plant goes dormant or slows in growth.
Propagating Alocasia Regal Shield
These plants are quite easy to propagate, since the parent plant reproduces by means of corms. To do this, you will need a small pot with moist, well-draining soil and a sharp, sterile knife. Then follow these instructions: Alternatively, you can try this Alocasia propagating technique:
How to Grow Alocasia Regal Shield From Seed
These large plants can also be started from seed, although the seedlings will take years before reaching their mature size. If you are looking for a fun project and don’t mind waiting for results, this is an option to consider. To start elephant ears, you will need seeds, well-draining soil and peat moss, small pots or trays, and a misting bottle. Then follow these instructions:
Potting and Repotting Alocasia Regal Shield
Alocasia Regal Shield grows wonderfully in containers, though it is important to note that these plants are quite top-heavy. Be sure to choose a pot that provides a sturdy base. These plants will need to be repotted every couple of years as the plant outgrows its current container size. When this occurs, simply choose a pot that is several inches larger than the current pot. Be sure it has good drainage holes to allow access water to drain away. Gently tip the plant on its side and tap around the circumference of the pot in order to loosen the roots. Then, slide the plant out and place it in the larger pot with fresh potting soil.
Overwintering
If this plant is kept indoors, be sure to place it near a bright window during the winter months to ensure it receives enough light. The plant may go dormant, and you will not need to water as much as in the summer months. Withhold any fertilizer. Elephant ear plants should not be kept outside if temperatures dip below 55 degrees Fahrenheit. If this is the case, be sure to bring this plant indoors.
How to Get Alocasia Regal Shield to Bloom
Most people are unaware that these plants do, in fact, produce flowers since it is a rare occurrence. It only happens once the plant is fully mature and if perfectly ideal conditions exist. The flowers of Alocasia Regal Shield appear on tall stalks and look very similar to peace lilies. They are white to green in color and are not overly showy. Even in ideal conditions, the Alocasia Regal Shield may not flower. To encourage it to bloom, be sure it receives plenty of humidity and stable temperatures. Water when the soil begins to dry, and give fertilizer monthly during the growing season. With time and patience, your elephant ear may surprise you with a flower.
Common Problems With Alocasia Regal Shield
Alocasia Regal Shield can be a bit picky at times, and will communicate that it is unhappy with its current growing conditions. Here are some common problems encountered when growing this plant and how you can address them.
Yellowing, Wilting Leaves
This is often a sign of overwatering. If the problem is not remedied, this can lead to root rot. To fix this, replace the soil with a better draining soil mixture and cut back on watering. The plant should perk up in a week or so.
Yellowing Leaves with Webs
This is most likely a spider-mite infestation. Trim away any infected leaves and dispose of them to avoid further contamination. Spray the plant with neem oil or other insecticidal solution.
Dry Brown Spots or Edges
This is a sign of too little humidity or water. Check the soil with your finger to determine whether or not the plant needs water. Try adding a humidifier nearby or start misting the leaves to give the plant more humidity.
