Convolvulus cneorum flowers don’t last long. They open slowly in the early morning light and close when daylight fades.

When flowers fold away like an umbrella, the flower is dead, and the cylinder slowly falls over.

Other species in this genus are vines. Profuse pink buds arranged loosely on panicles. The buds unfurl, producing white cone-shaped flowers with a yellow throat. The grey-green leaves are covered in fine hairs giving the plant a silvery appearance.