Buddleja davidii 'Black Knight'
butterfly bush (syn. buddleia)
Buddleja makes a fabulous addition to a sunny border, with dramatic, fragrant flowers that are attractive to butterflies and other beneficial insects. Pruned hard in spring, 'Black Knight' produces dense spikes of tiny, fragrant, dark purple flowers. In autumn the pointed grey-green leaves turn butter-yellow. Deadheading the buddleja will encourage it to produce more flowers and stop any unwanted seedlings.
How to care for Buddleja davidii Black Knight:
Plant out as soon conditions allow, avoiding frozen or waterlogged soil. Incorporate well-rotted manure or garden compost and perhaps some mycorrhizal fungi into the soil when planting.
Keep well-watered during warm weather until the plant has settled in fully, and once the plant has become established, prune it hard each year in March, cutting all of the previous year's growth back to within two to four buds from the base.
Keep well-watered during warm weather until the plant has settled in fully, and once the plant has become established, prune it hard each year in March, cutting all of the previous year's growth back to within two to four buds from the base.
Flowering period:
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
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.
2 litre pot
£19.99
In stock
(shipped within 2-3 working days)
(shipped within 2-3 working days)
10 litre pot | 80 - 100cm tall
£69.99
In stock
(shipped within 2-3 working days)
(shipped within 2-3 working days)
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