The scientific name is derived from the Greek osteon (bone) and Latin spermum (seed). It has been given several common names: African Daisy, South African Daisy, Cape Daisy and Blue-eyed Daisy. There are about 50 species, native to Africa, 35 species in southern Africa, and southwestern Arabia. They are half-hardy perennials or subshrubs. Therefore they do not survive outdoor wintry conditions, but there is still a wide range of hardiness.
Most widely sold cultivars are grown as annuals and are mainly hybrids of O. jucundum, O. ecklonis and O. grandiflorum and can be hardy to -2°C. If hardy, they can be grown as perennials or as shrubs. The photo is of a relatively newly introduced cultivar known as "Tradewinds Pure Yellow". They flower repeatedly and produce beautiful waves of colour during the growing season. This is a patented variety that was introduced in 2006 and the flowers are sterile and will not set seed.
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