Well named, for in late spring and early summer it carries clusters of snowy- white flowers atop fleshy 35cm stems. The large flowers are trumpet-shaped and have a honey-yellow throat, harmonizing charmingly with the pale green, fern- like foliage. Easy to grown and excellent for the front of the border where it blooms before the big rush of summer perennials. Only a few plants are required, just allow them to develop slowly into dense clumps.