Iris 'Black Knight'

Iris 'Black Knight': A Regal Presence in Deepest Velvet

Commanding and sophisticated, Iris 'Black Knight' brings bold drama to the spring garden with its rich, velvety falls in deep blackish-purple. Standing tall and statuesque, each bloom unfurls with subtle sheen and ruffled edges, creating an effect both luxurious and commanding. Sword-like foliage frames the floral display, offering structure even when not in bloom.

Plant Characteristics:

• Height: 80–90 cm
• Spread: 45–60 cm, upright and clump-forming
• Flower Colour: Deep black-purple with velvety texture
• Flowering Period: Late spring to early summer
• Foliage: Upright, grey-green, sword-shaped leaves; deciduous
• Sunlight Requirements: Full sun
• Soil Requirements: Well-drained, neutral to slightly alkaline soil; avoid soggy conditions

Uses and Benefits: Iris 'Black Knight' delivers powerful contrast and vertical drama to perennial borders and formal plantings. Its brooding colour pairs beautifully with both soft pastels and bold jewel tones, making it a standout in mixed beds. Excellent for cutting gardens and admired for its sculptural effect even after flowering.

Companion Plants: Combine Iris 'Black Knight' with Salvia 'Caradonna' for a moody, textural pairing. Introduce Achillea 'Moonshine' for a pop of soft yellow and fine foliage contrast. Complete the look with Festuca 'Elijah Blue', whose icy blue tufts highlight the iris’s deep tones with cool, modern balance.

Care Instructions: Plant in full sun with excellent drainage. Rhizomes should be partially exposed and not mulched heavily. Water deeply during dry spells, but avoid standing moisture. Divide clumps every 3–4 years after bloom season to maintain vigour and bloom production.

History: Iris 'Black Knight' is a classic tall bearded variety, prized for its depth of colour and regal stance. Though older in lineage, it remains a favourite for gardeners who appreciate vintage cultivars with enduring garden performance and stately beauty.

Final Thoughts: Mysterious and refined, Iris 'Black Knight' brings gothic elegance and noble stature to the spring garden—an iris that wears its name with pride and grace.