‘Hammondii ‘

White flowers, VIII–IX; mid-green foliage; vigorous; height 31–45cm; spread 46–60cm. A very old cultivar, but still one of the best.

Introduced by 1850; listed by John Frazer (Leyton, Essex, England) in 1866, and by Lawson Seed & Nursery Co. (Edinburgh, Scotland) in 1874.