Perennial of the Brassicaceae family, widely spread in central and southern Europe, from sandy plains to mountainous levels, on limestone rocks, dry lawns, scree, and old walls, always on well-drained substrates and in full exposure.
It forms low semi-woody clumps, 10-25 cm, with narrow, grayish leaves, covered with a dense starry indumentum. In April-May, it is abundantly covered with small bright yellow flowers, gathered in corymb-like clusters that elongate at fruiting. The whole plant has a very pleasant silvery-grayish appearance, which contrasts with the vividness of the floral yellow.
It is one of the easiest species of the genus to cultivate, tolerant of a wide variety of calcareous or neutral substrates, provided the drainage is satisfactory. It is perfectly suited for rock gardens, walls, dry borders, and sunny embankments. It can be lightly pruned after flowering to maintain a compact clump.