Euphorbia hypericifolia

A frost-tender, evergreen, herbaceous perennial forming a mound, with stems to 60cm (2ft) high and wide, with green, opposite, elliptical leaves. Attractive, much-branched terminal flower clusters appear from spring to autumn, each consisting of a central green and white female flower, surrounded by showy, male flowers with elliptical, white floral bracts. The plant is often grown as an annual outdoors in cool climates, but where container grown, can be overwintered in frost-free conditions.