Convolvulus cneorum also known as shrubby bindweed silverbush or silver bindweed is an evergreen drought tolerant plant from the mediterranean region that grows well in british gardens it has very silvery linear foliage and pretty white funnel shaped flowers in late spring and summer it is a plant that is particularly well suited for gravel gardens rockeries balconies patio containers and roof gardens height 100cm 40393441 spread 100cm 40393441