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20% off Hardy Shrubs
20% off Exotic, half-hardy plants and succulents

Buddleja davidii 'Black Knight'

Common Name: Butterfly Bush
Plant Family: Scrophulariaceae
Plant Type: Hardy Shrub


Vigorous deciduous shrub with large panicles of deep mauve flowers in late summer. One of the best for attracting butterflies and pollinating insects. Grow in well drained soil in sun/ part shade. Cut stems back annually to 30cm above ground in Feb-March.

20%
off
Buddleja  davidii 'Black Knight'
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POT SIZE/QUANTITY:  1.5 litre
RHS Award of Garden Merit:  Yes
Season of Interest:  Summer to Autumn
Bee and Butterfly:  Both
Sun or Shade:  Sun
Height:  large (up to 12 feet)
Minimum temperature:  Hardy
Position/Situation:  Sunny Border
Planting Style:  Wildflower or Wildlife
Flower Colour:  Purple
Habit/Shape:  Arching
Soil Type:  Normal, well-drained but moisture retentive
Soil PH:  No preference

Availability:  

12 in stock  

12 in stock

Price:  £6.80
List Price:  £8.50
Saving Of:  £1.70 (20%)
+

20% off Hardy Shrubs


Mainland UK  £8.50 -£10 Local delivery Postcodes IP1 through to IP8 & CO10 (minimum order value £35) FREE
Seeds & cuttings only  £2 Collect from our Nursery (Elmsett, Suffolk, IP7 6LZ) FREE
Scottish Highlands & offshore Islands From £10 We only send plants & seeds to UK locations (excl. Northern Ireland) Sorry we cannot ship to any other Country due to British Plant Health regulations on the export of plants post Brexit. There are no exceptions unfortunately  

 

See our delivery information page for details

Unless otherwise indicated our plants are supplied in the following pot sizes according to category. Dimensions refer to either the pot diameter (cm) or volume (litre);

  • Exotics/Conservatory & House Plants, Succulents: mostly as young plants in 9cm (approx. 0.5 litre)  or 1 litre pots
  • Hardy Perennials, Ferns and Grasses: 1 litre (approx. 12cm diameter)
  • Herbs: 9cm (approx. 0.5 litre)
  • Hardy Shrubs and Climbers: 1.5 or 2 litre 
  • Potted Bulbs: variable- please see "Quantity or Pot size" on plant information page 
  • Dormant Bulbs, Tubers and Bare-root perennials come either bagged or wrapped without a pot

The exact size of plants will vary with the growing season and may be cut back in accordance with normal pruning regimes or to fit in the box if they are excessively tall.