Perennial of the Caryophyllaceae family, Dianthus nitidus is an endemic species of the Western Carpathians, mainly found in Slovakia and northern Hungary, where it grows on limestone rocks, cliffs, and dry rocky grasslands exposed to the sun, between approximately 400 and 1,500 meters.
It forms dense, low clumps, 10 to 25 cm in height when in flower, with narrow linear, glossy green, rigid foliage, whose surface shine is the origin of the species name nitidus, meaning "shiny" in Latin. The flowers, borne singly on erect stems, are bright pink to dark pink, with denticulate petals, without a marked basal spot, emitting a light fragrance.
In its natural habitat, its flowering extends from June to August. In cultivation, it generally occurs from June to July.
A rare and protected species in its natural range, it is not widely spread in horticulture but is appreciated by specialized collectors. It requires a sunny exposure, well-drained limestone soil, dry to moderately fresh, and is hardy in alpine-style rock gardens or gravel gardens with a limestone substrate.