Buddleja davidii ‘Black Knight’ – Butterfly Bush – 2Ltr Pot

Buddleja davidii ‘Black Knight’ Butterfly Bush is a striking deciduous shrub known for its deep purple, fragrant flower spikes that attract butterflies and pollinators. Perfect for sunny borders, this vigorous plant delivers bold colour and wildlife interest throughout summer.

Key Features

• Rich, deep purple flower panicles with a pleasant fragrance
• Excellent for attracting butterflies, bees, and other pollinators
• Vigorous growth, ideal for creating height and structure in borders
• Drought tolerant once established, suitable for low-maintenance gardens
• Hardy to -20°C, well-suited to UK climates
• Supplied in a 2L pot, ready for planting

Product Description

Buddleja davidii ‘Black Knight’, commonly known as the Butterfly Bush, is a classic garden favourite valued for its dramatic, dark purple blooms and reliable performance. Producing elongated clusters of scented flowers on the tips of current year’s growth, this shrub provides a long-lasting display from mid to late summer while attracting a wide range of pollinators.

Its arching branches and lance-shaped green leaves, which are softly pale beneath, create a graceful, airy structure that works well in both informal and structured planting schemes. Ideal for wildlife gardens, cottage gardens, or mixed borders, ‘Black Knight’ offers strong visual impact and ecological benefits.

Adaptable to a variety of soil types—including chalk, clay, loam, and sandy soils—this hardy shrub thrives in sunny positions and tolerates drier conditions once established. Its robust nature and minimal care requirements make it an excellent choice for gardeners seeking a dependable yet eye-catching feature plant.

Specifications

• Product Name: Buddleja davidii ‘Black Knight’ – Butterfly Bush
• Pot Size: 2L
• Plant Type: Deciduous flowering shrub
• Flower Colour: Deep purple
• Fragrance: Yes, scented blooms
• Ultimate Height: 2.5–4 metres
• Ultimate Spread: 2.5–4 metres
• Time to Maturity: 5–10 years
• Hardiness: Hardy to -20°C
• Drought Resistance: Yes (once established)

Growing Conditions

• Soil Types: Chalk, clay, loam, sand
• Soil pH: Acid, neutral, alkaline
• Moisture: Moist but well-drained or well-drained soil
• Position: Full sun or partial shade
• Aspect: East-, South-, or West-facing
• Exposure: Suitable for exposed or sheltered sites

Care Tips

• Prune hard in early spring to encourage fresh growth and abundant flowering
• Plant in a sunny position for the best colour and bloom production
• Water regularly during the first growing season to establish roots
• Deadhead spent flowers to prolong the flowering period
• Apply mulch annually to help retain soil moisture and improve soil quality

Add Bold Colour to Your Garden

Bring dramatic depth and pollinator appeal to your outdoor space with Buddleja ‘Black Knight’. A reliable, easy-care shrub that’s perfect for gardeners looking to combine striking colour with wildlife-friendly planting.