A popular rock garden perennial for the spring garden, often seen growing with Arabis and Aubrieta. This forms a low, trailing mound of silvery-grey leaves, bearing masses of bright-yellow flowers in mid to late spring. Clip plants lightly after blooming to maintain a bushy habit. Requires good drainage. Clumps are not easily divided, but this may be attempted in early fall. Drought tolerant once established. Evergreen.