Description
🦋Buddleja davidii 'Black Knight' is a striking deciduous shrub known for its dramatic, deep purple flower spikes and irresistible fragrance that draws in butterflies and other pollinators mid-summer through to early autumn. From July to September, its long, arching stems are crowned with dense clusters of nectar-rich blooms, making it a standout feature in sunny borders. Despite its wild reputation, this butterfly bush is a brilliant garden performer when properly maintained. Prune hard in early spring to encourage vigorous flowering on new growth. In autumn, its grey-green leaves turn a lovely butter-yellow, adding seasonal interest. Fully hardy and fast-growing, it thrives in well-drained soil and full sun—perfect for wildlife-friendly, low-maintenance planting schemes. Deadheading the buddleja will encourage it to produce more flowers and stop any unwanted seedlings.
How to care for your Buddleja davidii 'Black Knight':
Common Name: Butterfly Bush
Flowering period: July, August, September
Eventual height: 3m, Eventual spread: 5m
Position: Full sun
Rate of growth: Fast-growing
Soil: Moderately fertile, moist, well-drained soil
Hardiness: Fully hardy
- This shrub is deciduous so it will lose all its leaves in autumn, then fresh new foliage appears again each spring.
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