Must-have hardy perennials, with the most unusual foliage, and some of the most sun-tolerant varieties available at the moment. The plumes of little flowers that appear in summer are an added bonus! Lime Marmalade - Ruffled foliage which is glowing lime to chartreuse green. Height 25-35cm (10-14"); spread 30-40cm (12-16"). HP - Hardy perennial. Supplied in a 9cm pot.