
Black Knight Butterfly Bush
Buddleja davidii Black Knight
A horticultural classic, 'Black Knight' offers a profusion of deep purple, fragrant blooms that are an irresistible magnet for butterflies.
Size
Installation
About this plant
Buddleja davidii 'Black Knight' is a truly exceptional deciduous shrub renowned for its spectacular floral display. Throughout summer, it produces abundant, slender panicles of intensely dark purple flowers, creating a dramatic contrast against its silvery-green foliage. The intoxicating honey-like fragrance wafts through the garden, making it a delightful addition to borders, cottage gardens, or as a vibrant specimen plant. Beyond its undeniable beauty, 'Black Knight' is a champion for pollinators. Butterflies of all shapes and sizes, along with bees and hummingbirds, are drawn to its nectar-rich blossoms, transforming your garden into a buzzing, fluttering haven. Its robust growth habit and long blooming period ensure months of enjoyment. This cultivar is a popular choice for its rich color and reliable performance. A relatively low-maintenance shrub, it provides significant visual impact and ecological benefit with minimal effort, making it ideal for both experienced gardeners and those just starting their horticultural journey.
Care & maintenance
Requires minimal pruning to maintain shape; cut back in late winter/early spring to encourage vigorous new growth and abundant blooms.
Quick facts
- Type
- shrub
- Mature height
- 6-8 ft
- Mature width
- 4-6 ft
- Sun
- Full Sun (6+ hours direct sun)
- Water
- Medium (prefers consistent moisture but tolerates some drought once established)
- Growth rate
- Medium to Fast