Perennial cultivar of the Crassulaceae family, selected from the type species native to the west coast of North America, from British Columbia to California, where it colonizes rocky cliffs, rocky outcrops, and sunny stony slopes, often near the coast or at moderate altitude.
This cultivar forms dense, spreading mats, hardly exceeding 5 to 8 cm in height, composed of very tightly packed fleshy rosettes. Its most immediately striking feature is the intensity of its pruinosity: the short, thick, spatulate leaves are covered with a white to silvery-white waxy coating so dense that it almost erases all traces of green, giving the whole plant an almost mineral appearance. The stems are reddish, contrasting with the pale foliage.
The flowers, bright yellow to golden yellow, are gathered in dense corymbs that crown short erect stems at the time of flowering, creating a striking contrast with the almost white foliage. In its natural habitat, the flowering of the type species extends from May to July; in cultivation, it generally occurs in June-July.
It requires full sun and very well-drained soil, poor to moderately rich. It does not tolerate stagnant moisture well, especially in winter. Cultivation in rock gardens, troughs, or between stones suits it perfectly. The pruinosity being fragile to the touch, it is best to avoid handling the foliage unnecessarily.