Pink Loosestrife Robin A cultivar of our native purple loosestrife, Lythrum salicaria Robin is an upright, medium-sized, clump-forming, herbaceous perennial. It has copious narrow green leaves on erect stems, which are topped in late summer with by spectacular, long-flowering, spikes of bright, magenta-pink flowers. Pink loosestrife Robin is invaluable for upright structure among laxer perennials, and the dots of bright colour also look well with grasses. It needs a lot of water, and can be grown in shallow water at the edge of ponds. A good plant for pollinators. Site: Tolerates exposure, including coastal exposureSoil: Fertile, reliably moist, clay, loam or peaty soil, including water-logged soilsPosition: Full sun; tolerates partial shadeSeason of interest: Vivid magenta flowers from June to SeptemberHardiness: Fully hardyHeight: up to 4’ (1.2m) Spread: 20” (50cm)