Description
Royal Hawaiian Black Elephant Ear (Colocasia ‘Royal Hawaiian Black’) is a stunning and distinctive variety of elephant ear, known for its striking dark purple-black foliage that is accented with vibrant green veins. This variety is a member of the Royal Hawaiian series, which is famous for its dramatic, large, heart-shaped leaves and exceptional color contrast. The deep, dark foliage of the Royal Hawaiian Black stands out beautifully, especially when paired with its bold green veins, making it a showstopper in any garden or indoor setting. Like other elephant ears, it has a lush, tropical look that adds exotic flair to landscapes, but it can also thrive indoors when provided with the proper care.
NOTE: You will receive this item in a 2.5×4 inch greenhouse pot meant for transport only. It will need to be repotted upon arrival. See instructions below. Photo 4 is reference for stock being shipping at this time.
Ideal Care Instructions
Light: Prefers bright, indirect light indoors. Royal Hawaiian Black can tolerate some direct sunlight outdoors, but it performs best in partial to full shade, particularly in hot climates where direct sun can scorch the leaves. Indoors, a bright window with filtered sunlight will help maintain the plant’s vibrant color.
Watering: This variety enjoys consistently moist soil but does not like to sit in stagnant water. Water regularly to keep the soil evenly moist, but avoid overwatering to prevent root rot. Ensure good drainage when planting outdoors or in containers. The plant thrives near water features such as ponds, but it’s essential to maintain moist soil without being waterlogged.
Humidity: Being a tropical plant, it thrives in high humidity. If you’re growing it indoors, increase humidity levels, especially in dry environments (e.g., during winter). You can place the plant on a humidity tray, use a humidifier, or lightly mist the leaves to keep them hydrated. Outdoors, it naturally thrives in humid, tropical, or subtropical climates.
Temperature: Royal Hawaiian Black prefers warm temperatures between 65–85°F (18–29°C). It is very sensitive to frost and should not be exposed to temperatures below 50°F (10°C). If growing indoors, keep it in a warm room, away from drafts or cold air. Outdoors, it should be planted only once the threat of frost has passed, typically in late spring or early summer.
Soil: Prefers rich, well-draining soil that retains moisture but doesn’t become soggy. A slightly acidic to neutral pH is ideal. For outdoor planting, amend the soil with compost or organic matter to improve its fertility and drainage. If grown in containers, ensure the potting mix is loose and drains well to prevent water retention.
Fertilizing: Fertilize regularly during the growing season (spring and summer) with a balanced liquid fertilizer or one with higher phosphorus content to encourage vibrant foliage growth. Fertilize every 4–6 weeks, but reduce or stop feeding during the fall and winter when the plant’s growth slows. Over-fertilizing can result in leggy growth, so follow the recommended dosage.
Pruning: Prune any yellowing or damaged leaves to keep the plant looking tidy. If the plant becomes too large, you can trim it back, especially in containers, to maintain a manageable size. In colder climates, it’s advisable to cut back the foliage before bringing the plant indoors for winter storage. Outdoors, trimming the plant before the first frost helps the plant prepare for dormancy.
How to Plant
Indoors (for year-round growth or early blooms): Start by planting the corms in a container with well-draining, rich potting mix. Plant the corms 2–4 inches deep with the concave side facing down. Keep the container in a warm, bright spot with indirect light. Ideal temperatures are between 65–85°F (18–29°C). Water regularly to keep the soil evenly moist. If the air is dry indoors, provide extra humidity with a humidity tray or occasional misting. Indoor plants can continue to grow and thrive year-round if given proper care.
Outdoors (after frost danger has passed): Royal Hawaiian Black should be planted outdoors once the danger of frost has passed, typically in late spring or early summer. This variety thrives in partial to full shade. Choose a location with fertile, well-draining soil. Dig a hole about 2–4 inches deep, and plant the corm with the concave side facing down. Space the corms 12–18 inches apart. Water well after planting and keep the soil consistently moist but well-drained. Mulching around the plant can help retain moisture and protect the roots from heat stress.
Container Planting (for flexibility indoors or outdoors): Royal Hawaiian Black can be grown in containers, making it easy to move the plant indoors when temperatures drop or place it outside in the summer for a dramatic tropical effect. Use a large container with good drainage and fill it with a high-quality, well-draining potting mix. Keep the container in a location with bright, indirect light indoors, or outdoors in partial shade to avoid scorching the leaves. Water regularly, ensuring the soil remains moist but not soggy.
Hardiness Zones
Outdoor Plant: Hardy in USDA Zones 8–11. In these zones, Royal Hawaiian Black Elephant Ear can be planted outdoors year-round. In colder zones (Zones 7 and below), it should be treated as an annual, or the corms should be dug up before the first frost, stored indoors over the winter, and replanted in the spring.
Indoor Plant: Royal Hawaiian Black can be grown indoors in any climate, provided it receives the right conditions—bright, indirect light, consistent moisture, and high humidity. It will thrive indoors with proper care year-round, adding a touch of elegance and drama to your home.
