Hibiscus is a genus of flowering plants in the mallow family, Malvaceae. It is quite large, containing about 200 to 220 species that are native to warm-temperate, subtropical and tropical regions throughout the world. Member species are often noted for their showy flowers and are commonly known as hibiscus or rosemallow. The genus includes both annual and perennial herbaceous plants, as well as woody shrubs and small trees.

Hibiscus trionum or Flower of an hour as it is commonly known is a 25cm tall straggly annual with lobed or deeply cut leaves and cream flowers with magenta centres during spring and summer. Plant this gorgeous annual for a great display of colour in the garden.