- Deep purple, almost black flower heads appear in midsummer, creating dramatic vertical accents that provide contrast and depth in borders, patio containers, and mixed perennial plantings, instantly drawing the eye and adding sophistication to garden designs.
- Its strap-like green foliage remains lush and attractive year-round, offering structure and texture even when not in bloom, while flowers attract a variety of pollinators including bees and butterflies, supporting garden biodiversity and a lively outdoor space.
- Hardy, low-maintenance, and drought-tolerant, it thrives in full sun and well-drained soil, making it perfect for coastal gardens, sunny borders, or any spot where gardeners want bold summer colour without intensive care.
What you need to know:
- Height: Up to 1m
- Spread: Up to 60cm
- Soil type: Well-drained
- Flower colour: Dark purple
- Sun level: Full sun
- Position: Borders, containers, patio planting
- Flowering month: July–September
