Call Jacksons Nurseries on 01782 502741  ORDER HOTLINE: 01782 502741

Home  Home
Buy Buddleja davidii 'Black Knight' (Butterfly Bush (Buddleja)) online from Jacksons Nurseries

Buddleja davidii 'Black Knight' (2/3L)

Butterfly Bush

£6.99

The "Black Knight" variety is very rare in Britain despite its excellent characteristics. It is the darkest of the purple forms of Buddleia (also known as Butterfly bush due to their attraction to it) and shows long trusses of deep violet.

This is a large deciduous shrub that produces large arching canes and often grows to its maximum height of 3 metres. The long, narrow foliage is grey-green to green above and white and fuzzy on the underside. Bears long, upright showy flowers which are lilac and orange in the throat. These are followed by small-capsules of fruit which help to give the plant year round colour and interest.

Should be grown in a fertile soil where full sun is available. Also benefits from being pruned back in spring to encourage new growth.

Buying Shrubs from Jacksons Nurseries

At Jacksons Nurseries we sell a variety of shrubs both evergreen and deciduous with a variety of flowering times throughout the year. At certain times of the year our shrubs you buy from us may not look like the images shown on our website when deciduous leaves have fallen, the shrub has finished flowering or has been trimmed back.  

Some leaves on evergreen shrubs can be damaged in winter by frost or harsh winds but in spring new leaves will readily replace those damaged. This is quite normal on many evergreen varieties and is preferable to plants grown with excessive protection that show cold shock once planted out and establish less satisfactory initially.

 

Buddleja davidii 'Black Knight' (2/3L)

The "Black Knight" variety is very rare in Britain despite its excellent characteristics. It is the darkest of the purple forms of Buddleia (also known as Butterfly bush due to their attraction to it) and shows long trusses of deep violet.

This is a large deciduous shrub that produces large arching canes and often grows to its maximum height of 3 metres. The long, narrow foliage is grey-green to green above and white and fuzzy on the underside. Bears long, upright showy flowers which are lilac and orange in the throat. These are followed by small-capsules of fruit which help to give the plant year round colour and interest.

Should be grown in a fertile soil where full sun is available. Also benefits from being pruned back in spring to encourage new growth.

 


 

Buddleja davidii 'Black Knight'
Butterfly Bush
Shrubs
2m - 2.5m
3m - 4m
  • Purple
Summer - Autumn
Deciduous
Yes
Fast
Fully Hardy
  • Full sun  Full sun
  • Partial shade  Partial shade
  • Moist Well-drained
  • Well-drained
  • Acid
  • Neutral
  • Alkaline
  • Chalk
  • Clay
  • Loam
  • Sand

Shrubs are deciduous or evergreen woody plants, and often provide fragrant flowers, berries and foliage. They are good for structural framework, and they can provide a wonderful shelter and food source for wildlife.

Planting and Conditions

Container grown shrubs can be grown at any time of year. It is a little known fact that shrubs planted in the autumn and winter will be easier to look after than those planted in the spring and summer, because they will have time to establish and become hardy in the cooler months.

Plant the shrub at the same depth as it was in its original pot. Planting too deeply can result in root and stem rot.

One of the biggest causes of death in new shrubs is drought stress, so keep it well watered until it’s established.

Make sure you loosen the soil prior to planting. Most shrubs are tolerant of most soil types as long as it is fairly well draining.

Most shrubs will grow happily in containers, but they will be much more demanding on feeding and watering than shrubs in the ground would be. They will also need potting on every couple of years so that they don’t suffocate or become stunted in their pot.

Aftercare and Pruning

Once established, shrubs generally do not require much water. However, at first they need careful, frequent watering and should not be left to dry out.

Shrubs in the ground are generally not demanding and in most cases, annual feeding with general purpose fertilizer will suffice. Shrubs in containers may need more feeding; usually from early spring until late summer.

Shrubs also benefit from mulching in order to supress weeds, conserve moisture and provide vital nutrients. Mulch also greatly improves soil conditions. Shrubs can be mulched in late winter, after fertiliser has been applied, but it can be mulched through autumn to late spring as long as the ground is damp.

All shrubs benefit from dead-heading once spent flowers become apparent. Rhododendrons and Lilac especially benefit from the removal of dead flowers.

Some shrubs may show signs of reverted growth or ‘sporting’. This is where random shoots of different leaves associated with the plant’s parentage begin to appear. Most commonly this is where plants with variegated leaves sprout pure green growths instead of variegated ones.

To control reversion, remove reverted shoots promptly to discourage them. Reverted shoots are usually much more vigorous than the variegated ones, and thus should be completely pruned out and cut back into wood containing variegated foliage.

Potential Issues

Although shrubs are usually very robust garden plants, they can sometimes start to decline with no apparent or obvious reason.

This will start with browning leaves, which could indicate plant stress due to lack of water or waterlogging, an establishment failure or, in the worst case scenario, honey fungus. Another cause of leaf browning is a high salt content in the soil. This could be a natural occurrence, especially if you live near the ocean, or it could be from over fertilisation.

To remedy a high salt content, cut back on fertiliser and step up your watering regime for the next few weeks. If you live by the ocean, this will be harder to remedy—but stepping up your watering will help to wash some of the salt away all the same. 

Westland Gro-Sure All Purpose Plant Food

CODE: 6185

In stock
£3.99

Great all round feed for plants, vegetables and flowers in gardens and inside the home. Packed with nutrients for healthy flowers... More 

.


Westland Fish, Blood and Bone

CODE: 6193

In stock
£14.99

Ready to use Helps build soil fertility Encourages strong, healthy growth Increases crop yield Nutrient Content... More 

.


Westland Bonemeal Root Builder

CODE: 6194

OUT OF STOCK
Out-of-stock
£3.99

Westland Bonemeal is a natural, slow release, organic plant food that is ideal for trees and shrubs. It promotes strong and healthy rooting as well as... More 

.

Buddleja davidii 'Nanho Blue' (2/3L)

CODE: 2082

In stock
£6.99

A large deciduous arching, strong growing shrub producing dense clusters of fragrant rich violet-blue flowers, throughout summer. long mid green leaf... More 

.


Buddleja davidii 'Royal Red' (2/3L)

CODE: 2083

In stock
£5.99

A large deciduous arching, strong growing shrub producing plumes of deep purple-red flowers, throughout summer. long mid green leaf with a felt like... More 

.


Buddleja davidii 'Buzz Magenta' (2/3L)

CODE: 001-001-015-001

Out-of-stock
[CURRENTLY UNAVAILABLE]

A Buddleja for the pot! A revolution in Buddleja – this one has wonderful rich purple-magenta flowers. Buddleja Buzz ‘Magenta’... More 

.


Magnolia stellata

CODE: 9855

In stock
£14.99

Fragrant bright creamy-white flowers from silken buds before the deciduous narrow deep green leaves form on a superb compact shrub or small tree.... More 

.


Abelia x grandiflora (2L)

CODE: 2063

In stock
£5.99

A fantastic, semi-evergreen variety with slender, arching branches and elongated, glossy dark green leaves. It bears delicate, light pink, funnel-shaped... More 

.

Rosa 'Falstaff' (3/4L ENG CLM)

CODE: 21

OUT OF STOCK
Out-of-stock
£14.99

A stunning English rose by David Austin that is one of the best purple/crimson varieties. Powerful old rose fragrant blooms can be enjoyed in summer. As... More 

.


Rhododendron x hybrid 'Britannia' (4/5L)

CODE: 1465

OUT OF STOCK
Out-of-stock
£19.99

This is a slow-growing, evergreen hybrid that has a dense, compact and rounded growth habit. It is ideal for the medium-sized garden and bears dense... More 

.


Astrantia major 'Roma' (2L)

CODE: 595

In stock
£11.99

Fabulous deep pink variety of Astrantia with pincushion-like flowers on tall stems. These appear above mounds of mid-green leaves through summer and into... More 

.


Heuchera 'Midnight Rose' (2L)

CODE: 461

In stock
£7.99

'Midnight Rose' has deep maroon frilled semi-evergreen leaves, finely splashed with brightest pink in spring, turning creamy red on dark burgundy... More 

.


Cornus sericea 'Flaviramea' (2L)

CODE: 2117

In stock
£4.99

Cornus sericea 'Flaviramea' is a beautiful, deciduous, dense shrub which shows lovely rich golden stems in winter. It is a very hardy plant which... More 

.

Add a Card and Message to your order

CODE: 12640

In stock
£1.50

Are you buying a gift for a loved one? If so, then why not add a personal message to your purchase. Simply enter your message in the box above and... More 

.

 
 
 

You might also like:

 

Subscribe to our newsletter for special deals and exclusive offers   Sign Up Now

Loading...