Black Knight butterfly bush
Buddleja davidii 'Black Knight'
RHS AGM 1993
USDA zones5 to 9
SunNeeds full sun (6+ hours)
WaterHandles moderate to moist soil
Size6 to 8 feet tall3 to 5 feet wide
- Growth rate
- Rapid
- Habit
- Arching
- Bloom season
- Summer, autumn
- Bloom color
- Very dark purple
- Soil types
- Sand, loam, clay, chalk
- Soil pH
- Acid, alkaline, neutral
Garden uses
Attracts
Notes
'Black Knight' butterfly bush (Buddleja davidii 'Black Knight') is a shrub for borders, cottage gardens, and pollinator gardens. It is hardy to USDA zone 5, or down to -20°F (-29°C). This plant likes full sun and average to moist soil of most types. Deer and rabbits usually look elsewhere for a meal. Its dark purple, fragrant flowers draw butterflies, hummingbirds, and bees. The arching stems grow fast and reach 6 to 8 feet tall.
Pairs well with Gaura, Feather reed grass, and Casa Blanca lily.