Colocasia Black Hawaii - Marginal Pond Plants - EP100

Colocasia 'Black Hawaii', commonly referred to as Black Hawaii Elephant Ear, is a dramatic and exotic tropical perennial prized for its striking black foliage and bold, architectural presence. This cultivar of Colocasia is ideal for water gardens, boggy landscapes, or as a standout feature in tropical-themed gardens. Its large, glossy leaves with deep black-purple hues make it a true focal point in any garden setting.

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Description

Colocasia 'Black Hawaii' grows to a height of 1–1.5 meters (3–5 feet) with a similar spread, forming a clump of large, heart-shaped leaves. The foliage is glossy and dark black-purple, with prominent veins that create a dramatic and sophisticated effect. The leaves are held on sturdy, blackish-purple petioles, adding to the plant's bold visual appeal.

While primarily grown for its foliage, the plant may occasionally produce small, spadix-type flowers enclosed in greenish spathes. However, its primary ornamental value lies in its stunning leaves.

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Growing Conditions

Colocasia 'Black Hawaii' thrives in full sun to partial shade, although partial shade is recommended in hotter climates to prevent leaf scorch. It requires consistently moist or waterlogged soil, making it perfect for pond edges, bog gardens, or even shallow water up to 10 cm (4 inches) deep.

The plant prefers rich, nutrient-dense soils, such as loam or clay, with slightly acidic to neutral pH levels. While hardy in tropical and subtropical climates, Black Hawaii requires frost protection in temperate regions, such as the UK, where it is often grown as a tender perennial or overwintered indoors.

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Propagation and Care

Colocasia 'Black Hawaii' can be propagated by division of the rhizomes or offsets. Division is best done in spring when new growth is emerging. Carefully separate the rhizomes or offsets from the parent plant and replant them in moist soil or containers.

This plant requires consistent watering to maintain damp conditions. Fertilize regularly during the growing season with a balanced, slow-release fertilizer to encourage vigorous growth and maintain its striking foliage. In frost-prone areas, lift the rhizomes in autumn, store them in a cool, dry place, and replant them in spring. Alternatively, grow the plant in containers that can be moved indoors during winter.

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Uses

Ornamental:

Colocasia 'Black Hawaii' is a striking feature plant for water gardens, tropical-themed landscapes, and large containers. Its bold, dark foliage contrasts beautifully with brighter plants such as Canna lilies, Caladiums, or Alocasia.

Container Planting:

The compact yet dramatic habit of Black Hawaii makes it an excellent choice for containers. It can be grown on patios, decks, or near water features, adding a tropical touch to small spaces.

Water Features:

Perfect for planting in shallow water or at pond edges, this plant adds texture and depth to aquatic settings.

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Ecological Value

Although primarily ornamental, Colocasia 'Black Hawaii' provides habitat and shade for small aquatic creatures when grown in or near water. Its large leaves help create microclimates that can benefit insects and amphibians.

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Considerations

• Moisture Needs: Black Hawaii requires consistently moist or waterlogged soil and should not be allowed to dry out.
• Frost Sensitivity: This plant is not frost-hardy and must be protected in colder climates by overwintering indoors or lifting the rhizomes.
• Space Requirements: With its large leaves and spreading growth habit, this plant requires adequate space to reach its full potential.

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Summary

With its bold, black-purple foliage and dramatic form, Colocasia 'Black Hawaii' is a striking addition to water gardens, tropical landscapes, and boggy settings. Its ability to thrive in wet conditions, combined with its ornamental appeal, makes it a versatile choice for enhancing the aesthetic of aquatic and tropical-themed gardens. Easy to grow and maintain with proper care, Black Hawaii is sure to make a statement in any garden.

Why Choose Colocasia 'Black Hawaii' (Black Elephant Ear)?

Colocasia 'Black Hawaii', also known as Black Elephant Ear, is a striking and dramatic perennial that thrives in moist environments and shallow water. Known for its deep purple to black leaves, this variety of Elephant Ear offers a bold, exotic appearance that brings an air of tropical flair and elegance to any garden. Its ability to thrive in wet conditions and its bold, dramatic foliage make it a perfect choice for creating tropical-themed landscapes or adding dramatic contrast to any water garden.

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1. Dramatic Deep Purple-Black Leaves

• Colocasia 'Black Hawaii' features large, glossy, heart-shaped leaves that are a rich purple-black color, making them a dramatic focal point in any garden.
• The dark foliage creates a bold contrast with surrounding plants and brightens up your garden with a tropical, exotic feel.
• These deep-colored leaves provide vertical interest, adding height and texture to the landscape.

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2. Exotic and Tropical Appearance

• The large, wide leaves and striking color give this plant a tropical appeal, making it an excellent choice for creating a jungle-like atmosphere in your wetland garden.
• Its dramatic color contrasts beautifully with green plants and works well as a focal point in gardens with a tropical or exotic theme.
• Its tall stature adds height and structure, creating a lush, vertical element in your landscape.

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3. Thrives in Wet and Moist Conditions

• Colocasia 'Black Hawaii' is ideal for moist soil or shallow water (up to 30–45 cm / 12–18 inches deep), making it perfect for planting along pond edges, bog gardens, or wet meadows.
• It performs best in full sun to partial shade, offering flexibility in planting locations while ensuring healthy growth and vibrant foliage.

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4. Hardy and Low Maintenance

• Black Hawaii Elephant Ear is a hardy perennial that can tolerate fluctuating water levels and varying moisture conditions, making it suitable for diverse wetland environments.
• Once established, it requires minimal care, offering bold, beautiful foliage year after year with very little maintenance.

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5. Wildlife-Friendly

• The large leaves of Colocasia 'Black Hawaii' provide shelter for small creatures, such as insects, amphibians, and small birds, making it an excellent addition to a wildlife-friendly garden.
• While the plant doesn’t produce showy flowers, its foliage adds substantial interest and contributes to the overall biodiversity of your garden.

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6. Erosion Control and Water Filtration

• The plant’s dense root system helps stabilize soil, making it ideal for erosion control along pond banks and wetland areas.
• Colocasia 'Black Hawaii' also helps filter water, improving water quality by absorbing excess nutrients and contributing to better water clarity in your pond or wetland garden.

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7. Versatile Design Use

• Perfect for water gardens, bog gardens, pond edges, or tropical landscapes, where it can provide height, texture, and color.
• Works well in naturalistic plantings, creating a lush, tropical atmosphere, or in wildlife gardens to support small creatures.

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Key Features

• Height: 1–1.5 meters (3–5 feet)
• Leaves: Large, glossy purple-black heart-shaped foliage
• Soil: Moist to wet soil or shallow water
• Light: Full sun to partial shade

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Colocasia 'Black Hawaii' (Black Elephant Ear) is a bold, tropical addition to any water garden or wetland landscape. Its striking foliage, exotic appearance, and adaptability to wet conditions make it an excellent choice for creating a stunning, diverse, and functional garden.