Buddleja davidii 'Black Knight' - summer flowers
Buddleja davidii 'Black Knight' - flower close up
Buddleja davidii 'Black Knight' - summer flowers
Buddleja davidii 'Black Knight' - flower close up

Buddleja davidii 'Black Knight'

In Stock (shipped within 2-3 working days)
£18.95

(Butterfly Bush) A popular garden plant, Buddleja davidii 'Black Knight' grows to be a large shrub with lovely long trusses of fragrant, dark purple flowers in late summer.

More Information

Supplied Size
  • 3 litre pot (2-3 years old, 30-40 cm tall)

Buy this Quantity (or more) Reduced to (each)
3 £16.95

(For any number of plants sent by courier)

Standard: £6.95
Shipped within
2-3 working days 

Priority: £15
Shipped ASAP

Click & Collect
5% discount

*Surcharges apply for delivery to Highlands & Islands. 

(For any number of plants sent by courier)

Standard: £6.95
Shipped within 2-3 working days
Priority: £15
Shipped ASAP
Click & Collect: free
+5% discount

*Surcharges apply for delivery to Highlands & Islands.

4.8 on Google Business Reviews
 

A popular garden plant, Buddleja davidii 'Black Knight' grows to be a large shrub with lovely long trusses of fragrant, dark purple flowers in late summer. The leaves are pale grey-green and the long lasting flowers are popular with bees and butterflies.


  • Position: Full sun or light, dappled shade.
  • Soil: Well drained, fertile soil.
  • Hardiness: Hardy.
  • Flowering Period: July - September.
  • Flower Colour: Dark purple
  • Rate of Growth: Vigorous.
  • Habit: Buddleja davidii 'Black Knight' grows to be a large branching, rounded shrub if left unpruned.
    • Height: up to 2.5 - 3 m (10 ft)
    • Spread: 3 m (10 ft)
  • Pruning: To encourage flowering and keep a tidy habit, prune Buddleja davidii 'Black Knight' back hard to a bud in February or March.
How Much Sun
Full Sun, Light Shade
Eventual Size
Shrub - Medium (1.5m - 3m), Shrub - Large (3m+)
Growing Conditions
Soil: Acid, Soil: Alkaline, Soil: Damp/Wet, Soil: Dry/Sandy, Soil: Not Fussy, Site: Coastal Areas, Site: Windy
Special Features
Wildlife Friendly - Bees, Flowers in Summer
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