Lythrum salicaria ‘Swirl’ or Purple Loosestrife ‘Swirl’ is part of the Lythraceae family of plants. It is a herbaceous perennial that grows up to 90cm or 3ft tall.
Lythrum salicaria produces numerous reddish-purple stems from a woody root. The foliage of this cultivar is ferny which is why it is named ‘Swirl’. It flowers in summer. The flowers are bright purplish-pink and have about six petals. They cluster around and grow through the axils of leaves. Lythrum salicaria produces three different flower types with different sizes and styles of stamens. The flowers can be pollinated by each type. The fruits are small capsules.
How to grow Lythrum salicaria ‘Swirl’:
Grow Lythrum salicaria ‘Swirl’ in the sun or partial shade. Plant it around edges of a pond or where there is moisture. Deadhead the flowers. Propagate by division every few years or by seed. The flowers are nectar-rich and attract pollinators, butterflies and bees. It dies back to below ground end of season each and grows again in spring.
Also read Lythrum virgatum ‘Dropmore Purple’