Dwarf cultivar of Sedum acre L., a perennial from the Crassulaceae family, selected in cultivation from the type species widely spread in Europe and Western Asia.
It shares with the type species its adaptation to dry and well-drained environments, rockeries, walls, sandy or gravelly substrates, in full sun exposure. In cultivation, it is particularly at ease in collection containers, well-maintained alpine gardens, and miniature compositions where its reduced size is fully appreciated.
The habit is that of a very dense and compact carpet, hardly exceeding 3 to 5 cm in height. The stems, thin and close together, bear tiny fleshy leaves, smaller than those of the type species, closely imbricated, from medium green to bright green during the growing season. In cold weather or during periods of water stress, the foliage takes on shades ranging from brown-red to deep red, giving it a particularly ornamental appearance outside of flowering.
The star-shaped flowers with five bright yellow petals appear in compact terminal cymes and cover the carpet at flowering time. In its natural habitat, its flowering extends from May to July; in cultivation, it generally occurs in May-June depending on exposure.
Its slower growth and miniature size make it a more manageable plant than the type species in delicate rockery compositions. It requires a perfectly draining, poor soil, in full sun, and easily withstands summer drought.