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BUDDLEJA davidii 'Black Knight'
Commonly known as Buddleia, Butterfly bush
Deepest purple
Further Reading....
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DeciduousMid-green leaves to 25cm (10in) long.
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Brown or black
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Height3m (10ft)
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Spread5m (16ft)
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Tall ShrubVariable, fast-growing shrub with long, arching shoots
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Hardy - cold winterHardy in most places throughout the UK even in severe winters. May not withstand open/exposed sites or central/northern locations. Plant can withstand temperatures down to -15°C (5°F)
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Full sun
BUDDLEJA davidii 'Black Knight'
- Details
- Mature Size
- Tips and Advice
- Goes Well With
- Planting Combinations
- Other Suggestions
- See Also...
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Additional FeaturesGood to knowWildlife plant - bees, butterflies and other insects.Pests & DiseasesCapsid bugs, caterpillars, figwort weevil, mullein moth, red spider mites.Place of originChina, Japan. garden origin. c1959. Netherlands. Ruys, Moerheim Nursery
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Flower ShapePaniclesDense panicles 15-20cm (6-8in) long long
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Garden Location/ConditionsCoastal / windsweptSuitable for open site, slightly back from the seaWoodland garden
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HardinessFully hardy
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Leaf marginEntire
(see photos above) -
Leaf shapeLanceolate
(see photos above) -
Pruning groupPruning group 4Suitable for: Deciduous trees and shrubs that flower on current year's growth or are grown for winter stem effect.
Pruning: Hard prune to a low permanent framework.
When: Annually in early Spring.
RHS group 5, 6 & 7 -
Scented PlantsScented flowers
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Seasonal InterestAutumnSummer
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Soil ConditionsFertile well drained soil
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WildlifeBee friendlyButterfly friendlyRabbit Resistant
Jan
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Buddleja - Care Guide
3m (10ft)
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5m (16ft) |

BUDDLEJA davidii 'Empire Blue'
Butterfly bush, Buddleia
Available from £14.50

BUDDLEJA davidii 'Royal Red'
Butterfly bush, Buddleia
Available from £14.50

BUDDLEJA davidii 'White Profusion'
Butterfly bush, Buddleia
Available from £14.50

BUDDLEJA davidii 'Pink Delight'
Butterfly bush, Buddleia
Available from £14.50
Useful extras...

Fertilisers & Feeds - Vitax
Q4 Pelleted Fertiliser
A useful fertiliser suitable for use on a wide variety of plants. Q4 provides all the nutrients and trace elements essential for vigorous growth, abundant flowering and ripening of fruit.
3 options from £6.00

Fertilisers & Feeds - Empathy
Rootgrow mycorrhizal fungi
Recommended by the RHS. Contains Rootgrow™ mycorrhizal fungi. Suitable for all trees and shrubs (except rhododendrons, azaleas, heathers, cranberries and blueberries)
2 options from £6.00

Fertilisers & Feeds - Empathy
All-purpose Seaweed Stimulant
All-purpose organic concentrated seaweed feed that is a ready to use, derived from sustainable harvested kelp, that can be used on all outdoor and indoor plants, except acid loving plants.
Perfect used in conjunction with Rootgrow™.
Only £7.50