Also known as Mossy Whitlow-grass. This is an evergreen alpine plant that requires a well-drained rock garden, gravel scree or alpine trough for success. It forms a small bun or hummock of small, fuzzy green leaves, bearing upright stems in very early spring that hold clusters of bright-yellow flowers. Plants do not usually divide successfully and are best increased from seeds or cuttings. Performs best in cool summer regions, but is surprisingly hardy. Keep this slow-growing bun-shaped plant away from more vigorous rock garden plants that may smother and kill it. Possibly hardy to Zone 3 or colder.