Delphinium 'Black Knight Group'


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Key information

Plant type

Hardy perennial

Flower colour






Skill level


photo by Friedrich Strauss, copyright GAP Photos (62114)

Plant details

Delphiniums are one of the classic flowers of the traditional summer garden. Their tall upright spikes laden with intensely-coloured flowers are a feature of herbaceous borders, where they are best grown near the back to add height and drama. The plants look best grown in a group with several other varieties in shades of blue and cream. Although the flowering season is quite short, delphiniums can often be coaxed into producing a few later flowers if the flower spikes are cut down as soon as the blooms are over. Black Knight Group produces gorgeous deep purple flowers with black eyes.

Family: Ranunculaceae

Genus: Delphinium

Cultivar: Black Knight Group

Plant type: Hardy perennial

Flower colour: Purple

Foliage colour: Mid-green

Feature: Flowers

Sun exposure: Full sun

Soil: Well-drained/light, Clay/heavy, Chalky/alkaline, Moist

Hardiness: Hardy

Skill level: Experienced

Height: 170cm

Spread: 75cm

Time to divide plants: March to April

Flowering period: June to July

Reader reviews


I think your team is great, and you have taught me well. I have been gardening now for 3 years still learning, My best gardener is Geoff Hamilton, I find a lot of inspartion from him.


I have recently discovered this plant and I am now learning how to protect it over winter. Your instructions are very clear and helpful.
Many thanks.

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