Height x Spread: 120cm x 60cm
This is a clump forming perennial that has narrow, mid-green leaves upon upright stems. These stems bear tall spikes of pink flowers that bloom through-out the summer.
Division can be carried out during the spring. Happy to grow in either sun or partial shade, providing the soil is moist. Plant 'Swirl' alongside watercourses or in boggy soils at the margins of ponds. Deadhead to prevent excessive self-seeding.