ornamentalFamily: AsparagaceaeGenus: Cordyline

Cultivar

Black Knight Cordyline

Cordyline 'Black Knight'

Cultivar: Black Knight

Cordyline 'Black Knight' features deep, dark purple to near-black foliage arranged in a bold, sword-shaped habit. It serves as a sophisticated architectural element, providing year-round structure and high-contrast color in frost-free landscape designs. Perfect for creating a modern tropical aesthetic, this plant is well-suited for both patio containers and sheltered garden spots.

Cordyline 'Black Knight' is a striking tropical plant prized for its dramatic, dark, sword-like foliage that adds architectural contrast to any garden. This cultivar thrives in warm climates and makes an excellent focal point in containers or borders.

Marketplace packs coming soon

Current nursery inventory and 18 / 36 / 72 pricing will appear here when available.

Cultivar Story

Start with Inspiration. Grow Your Aspiration.

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Growing Inspiration

Inspiration for future Agardeni growing environments.

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Marketplace Plant

A realistic representation of the starter plants offered in 18, 36, and 72 plant quantities.

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Aspirational Garden

Grow your aspirational plan into an inspirational garden.

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Plant Detail

A closer look at the fruit, flower, foliage, or mature defining characteristics of this cultivar.

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Repotting / Start Growing

Begin with a starter plant and establish it in a larger pot using quality potting soil with beneficials and fertilizer.

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Start ยท Plan ยท Grow

Start with real plants. Plan with current marketplace availability. Grow your aspirational garden.

Cultivar Video

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Cultivar Video Coming Soon

See this cultivar from starter plant to aspirational garden.

Plant Profile

Grow Black Knight Cordyline with confidence

Key growing information first, with the complete reviewed cultivar profile available when you want it.

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Sun

Full sun to partial shade; deeper color is often maintained in brighter light conditions.

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Water

Keep soil moderately moist but ensure excellent drainage to prevent crown rot.

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Mature size

4 to 8 feet tall and 2 to 4 feet wide

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Hardiness

9-11

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Growth habit

Upright, clumping, sword-leaved shrub

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Plant type

Tropical foliage plant

View Plant Data

Care, size, flowering, climate, soil, health, and additional reviewed data.

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Good to know

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Growing note

Provide consistent moisture during the first year of establishment, especially when grown in containers. Protect from hard freezes as foliage may be damaged in extreme cold.

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Climate note

Thrives in warm, humid conditions; protect from temperatures below 30 degrees Fahrenheit.

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Flower / fruit

Produces panicles of small, creamy-white flowers in mature plants, typically during late spring or summer.

Growing & Care

Everyday care, growth, feeding, and pruning guidance.

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Sun / light

Full sun to partial shade; deeper color is often maintained in brighter light conditions.

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Growth rate

Moderate

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Fertilizer

Apply a balanced, slow-release tropical plant fertilizer during the active growing season.

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Pruning

Remove lower dead leaves as necessary to maintain a clean trunk appearance.

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Care notes

Provide consistent moisture during the first year of establishment, especially when grown in containers. Protect from hard freezes as foliage may be damaged in extreme cold.

Size & Habit

How the plant grows and the space it needs at maturity.

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Mature size

4 to 8 feet tall and 2 to 4 feet wide

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Growth habit

Upright, clumping, sword-leaved shrub

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Spacing

3 to 5 feet apart

Flower / Fruit

Flowering, fruiting, pollination, bloom, and harvest behavior.

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Flowering / fruiting

Produces panicles of small, creamy-white flowers in mature plants, typically during late spring or summer.

Climate & Hardiness

Cold, heat, chill, and regional growing considerations.

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Hardiness zones

9-11

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Temperature

Thrives in warm, humid conditions; protect from temperatures below 30 degrees Fahrenheit.

Soil & Water

Moisture, drainage, soil, and pH preferences.

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Watering

Keep soil moderately moist but ensure excellent drainage to prevent crown rot.

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Soil

Well-draining, fertile potting mix or loose garden soil rich in organic matter.

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Soil pH

6.0-7.5

More Plant Data

19 additional reviewed fields from this Plant.id.

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Container Growing

Highly suitable for large containers; ensure pots have adequate drainage holes and use a premium potting mix.

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Family

Asparagaceae

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Foliage Look

Dark purple to near-black, lanceolate, semi-rigid, pointed foliage arranged in a fountain-like rosette.

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Foliage Rules

Leaves are lanceolate and sword-like, emerging from a central growing point; color ranges from deep burgundy to near-black.

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Fruit Flower Look

Small, creamy-white flowers borne on tall, branched panicles above the foliage.

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Fruit Flower Rules

Flowers are not expected on juvenile starter plants; they appear only on mature, well-established specimens.

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Growth Habit Rules

Maintain an upright, architectural form; avoid depictions of spreading or vining growth.

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Mature Plant Look

Tall, elegant, upright structural plant with a dark, colorful foliage canopy.

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Mature Stage Morphology

Tall, woody-stemmed plant with a crown of numerous long, pointed, dark purple foliage; older plants may develop a trunk.

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Morphology Rules

Focus on the dramatic dark color of the foliage and the upward-pointing sword-like leaf structure.

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Plant Faqs

Does Cordyline 'Black Knight' need full sun? It performs best in full sun to partial shade for the richest leaf color. Can I grow this in a pot? Yes, it is an excellent container plant that provides height and architectural interest. How cold hardy is this plant? It is hardy in zones 9 through 11 and should be protected from freezing temperatures.

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Root Look

Dense, healthy, pale white fibrous roots consistent with a well-established plug.

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Soil Look

Dark, rich, well-draining potting medium.

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Starter Stage

Young plants appear as small clusters of narrow, dark-colored leaves emerging from a central crown.

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Starter Stage Morphology

Short, lance-shaped leaves with intense dark coloration, flexible texture, and a healthy, fibrous root system filling the starter cell.

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Video Voiceover Script

Welcome to Agardeni, where inspiration for gardening helps us imagine how and where we will grow Black Knight Cordyline. This is Black Knight Cordyline, available as 18, 36, and 72 plant starter trays through the Agardeni Marketplace. Let this striking tropical plant become part of your aspirational plan, helping you imagine the dramatic, high-contrast landscape or container garden you want to create. Notice the defining, sword-like foliage that brings deep, dark color and bold architectural structure to every corner of your growing space. Establish your starter plug in a four-inch pot with quality, well-draining soil, then later move to a larger decorative container or a permanent spot in your garden when it is established. Find your inspiration with Agardeni. Explore real plants and real availability. Start. Plan. Grow.

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Youtube Tags

Cordyline Black Knight Tropical Plants Foliage Plants Container Gardening Architectural Plants Agardeni Gardening Inspiration Garden Design

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Youtube Video Summary

Discover the architectural beauty of Cordyline 'Black Knight', a stunning tropical plant with deep, dark foliage. It is the perfect choice for creating high-contrast displays in your garden or on your patio.

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Youtube Video Title

Cordyline 'Black Knight' Tropical Architectural Foliage

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Future Buyer Brand Sellers

Possible future seller options for 2.5-inch, 4-inch, and 1-gallon finished plants.