Persian Stone Cress
Native to the Middle East, this is a low shrubby perennial from the brassica family. Whilst not traditionally used as a food plant, all members of this family have nominally edible leaves and flowers. Persian cress forms a beautiful cushioned mound of soft blue-green needle-shaped leaves, with small clusters of lavender-pink blooms for many weeks from late spring. Grows best in poor, dry alkaline soil, needs excellent drainage and will not tolerate wet feet in winter, so it is perfect for for sunny rock gardens, walls, paving crevices etc. Drought and frost hardy. Prune lightly after flowering to maintain a bushy habit. Height to 30cm.