Description

A true garden showstopper, Delphinium ‘Black Knight’ boasts towering spires of deep indigo-purple blooms with velvety black centres. This cottage garden classic adds drama and elegance to borders, making it a favourite among South London gardeners looking to add height, impact, and pollinator-friendly colour. Stunning alongside roses, foxgloves, and phlox.

Plants supplied in a 14CM grower’s pot.

Key Features & Care:

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  Mature Height: Up to 1.8m


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  Mature Spread: Approx. 45cm


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  Flower Colour: Deep violet-black


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  Flowering Period: Early to mid-summer


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  Foliage: Deciduous, mid-green divided leaves


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  Fragrant: Lightly scented


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  Growth Rate: Moderate


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  Hardiness: Hardy in most UK gardens


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  Position: Full sun


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  Soil Moisture: Moist but well-drained


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  Soil PH: Neutral to alkaline


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  Soil Type: Rich loam or chalk-based soils


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  Wildlife Friendly: Loved by bees and butterflies

Perfect For:

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  Classic cottage gardens


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  Statement border planting


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  Cutting gardens and floral arrangements


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  Summer flower displays

How to Grow:

Plant in rich, well-drained soil and stake the tall flower spikes early in the season to prevent flopping. Deadhead faded blooms to encourage a second flush and cut back after flowering to promote healthy regrowth.

Please note:

Images show how this plant may look at various stages of maturity. The size you choose may look different.