This little plant naturally grows on the edges of sea cliffs. They're durable and grow into a mound up to 25cm across and 15cm high. Producing spherical white flowers above the foliage from early spring through to summer. If regularly dead headed they may have an autumnal flush of flowers also. They make great rock garden plants, they're great in alpine troughs or on raised beds and the top of a hedge. They like a dry free draining position with plenty of sun.