Black Knight Butterfly Bush - Buddleia 'Black Knight'

Black Knight Butterfly Bush (Buddleia 'Black Knight')

The Black Knight Butterfly Bush, botanically known as Buddleia 'Black Knight', is a popular flowering shrub known for its deep purple blooms and long flowering season. This ornamental shrub produces fragrant flower spikes that attract butterflies, hummingbirds, and other pollinators throughout the summer. Many gardeners choose to buy Black Knight Butterfly Bush plants online because they are fast growing, easy to care for, and provide reliable color in the landscape.

Landscaping Uses

The Black Knight Butterfly Bush shrub is widely used in pollinator gardens, flowering hedges, and mixed landscape beds. Its tall flower spikes add height and texture to garden designs while providing nectar for beneficial insects and birds. This flowering shrub works well planted in groups for a dramatic display of color or as a focal plant in sunny garden beds. It also pairs well with ornamental grasses and perennials in cottage-style or wildlife-friendly landscapes.

Specifications

Height: 4–6 ft
Width: 4–6 ft
Growth Rate: Fast
Sun: Full Sun
Water: Moderate to Low once established
Soil: Adaptable to most well-drained soils
USDA Zones: 5–9

Why Homeowners Love It

• Produces deep purple blooms that attract butterflies and hummingbirds
• Long blooming season from mid-summer through fall
• Drought tolerant and low maintenance once established
• Fast-growing shrub that adds vibrant color to garden beds

Planting & Care

Black Knight Butterfly Bushes grow best in full sun with well-drained soil and at least six hours of direct sunlight each day. Dig a hole about twice as wide as the root ball and plant so the top of the root ball sits level with the surrounding soil. Water regularly during the first growing season to establish strong roots. Once established, this shrub becomes drought tolerant and requires minimal care. Annual pruning in late winter or early spring helps maintain a compact shape and encourages abundant new flowering growth.