Larkspur 'Black Knight' 2L

Larkspur 'Black Knight' – Deep Purple in the Garden

Delphinium 'Black Knight' is one of the most striking varieties of delphinium, distinguished by intense dark purple, almost black flowers with contrasting white or black eyes. Its tall, slender inflorescences add architectural elegance to the beds and attract pollinators. It's a great choice for those looking for spectacular, long-flowering perennials that will add a dramatic touch to your garden.

Main features of the 'Black Knight' delphinium

Flowers

• Colour: Deep, dark purple black, often with a black or white eye.
• Shape: Double or semi-double flowers, gathered in long, dense, slender clusters.
• Flowering period: June–July, with the possibility of reflowering in September after appropriate pruning.
• Decorativeness: The flowers contrast strongly with the green foliage, creating a mysterious and elegant effect.

Stem and leaves

• Stem: Strong, stiff, growing up to 120–180 cm, resistant to breakage.
• List: Deeply lobed, green, decorative even outside the flowering period.
• Odour: Subtle, pleasant for pollinators.

Cut

• Form: A soaring, slender, tufted perennial.
• Height: 120–180 cm.
• Width: It grows 60–80 cm.

Cultivation requirements of the 'Black Knight' delphinium

Location and soil

• Position: Full sun – key for intense flower coloration and healthy growth.
• Soil: Fertile, humus, permeable, moderately moist, slightly alkaline to neutral.
• Humidity: It likes moist, but not waterlogged positions.

Watering and fertilizing

• Watering: Regular, especially during drought – the soil should be constantly slightly moist.
• Fertilization: In spring, apply a compound fertilizer for flowering plants, and you can also use compost.

Care

• Trimming: After the first flowering, it is worth cutting the shoots to a height of about 20 cm, which will stimulate the plant to bloom again in autumn.
• Supports: Due to the height of the plant, it is worth using staking, especially in windy positions.
• Reproduction: By dividing the clumps in spring or by root cuttings in autumn.
• Wintering: Fully frost-resistant (zone 3–7), but in colder regions it is worth mulching.

Application of Delphinium 'Black Knight'

Flower beds and garden compositions

• Mixed discounts: It goes perfectly with light perennials, such as white delphiniums, roses, lilies or lavender.
• Contrasting plantings: It creates a dramatic effect when combined with white or silvery plants.

Edging and paths

• Ideal for planting along alleys and paths, where its tall shoots give the composition a vertical structure.

English and naturalistic gardens

• It fits perfectly into romantic, classic gardens inspired by the English style.

Cut flowers

• Perfect for bouquets – its flowers keep fresh in the vase for a long time.

Plant Specifications

• Flower pot: 2 liters
• Age: 2 years old
  
• Frost resistance: Yes