A tall, upright perennial with spiked clusters of vibrant blue-purple flowers above lance-shaped leaves. Native to wetlands and meadows, it provides vertical structure and long-lasting colour in naturalistic and pollinator-friendly gardens.
• Exposure: Moderately wind-tolerant; not strongly coastal-tolerant, prefers inland or sheltered locations.
• Size: 90–150 cm tall; 45–60 cm wide.
• Soil: Moist, well-drained soils; tolerates clay, loam, and sandy substrates; prefers consistently damp conditions.
• Sun: Full sun to partial shade.
• Flowering Time: Mid to late summer (typically July–September).
• Wildlife Benefits: Flowers attract bees, butterflies, and other pollinators; seeds are eaten by small birds; stems and foliage provide habitat for insects.
