An unusual genus of plants (in UK cultivation), related to saxifragas. Typically evergreen, shade-loving, preferring a moisture-retentive soils. Over 80 species are spread across the Northern Hemisphere, including our native golden saxifrage, C. oppositifolium, with its euphorbia-like yellow flowers. For more show, try C. macrophyllum, from China, with its larger clusters of showy, pink-tinged white flowers. Often flowering early in the season.