Cistus Lusitanicus has bright green leaves, pure white flowers with dark purple spots at the centre of each petal, crinkled petals and a golden mass of stamens. True sun-lovers they thrive in sunny, warm borders with free-draining, even dry, soils. If you garden on a rocky site then cistus will love you, their roots searching beneath rocks and deep into gravel for any moisture, and they are great by the sea.