Iberis sempervirens 'Masterpiece'

'Masterpiece' is an evergreen, mound-forming sub-shrub, to 30cm tall, with narrow, linear leaves. In spring and summer this cultivar bears masses of flower clusters; each cluster is up to 7.5cm in diameter and comprises pure white flowers with a pale pink centre and yellow stamens. Prefers full sun and a moist well-drained soil.