Perennial of the Brassicaceae family, Noccaea rotundifolia is a species of the central and eastern Alps, also present in the Pyrenees and some massifs of central Europe. A high-altitude mountain species, it colonizes mobile siliceous scree, moraines, and high-altitude rockslides, generally between 2,000 and 3,500 meters, where it inserts itself between rock blocks in conditions of intense cold and prolonged snow cover.
It forms small, dense, rounded cushions, compact, barely exceeding 5 to 8 cm in height. The leaves are remarkably characteristic: thick, shiny dark green, orbicular to broadly oval, which gives it its epithet rotundifolia. They are arranged in tight rosettes that closely cover the rocky substrate.
The flowers with four petals, pink to pale pinkish-white, are gathered in short corymbs that barely emerge above the foliage, giving the flowering plant a particularly compact and neat appearance.
In its natural habitat, its flowering extends from July to August depending on altitude and exposure.
In cultivation, it requires perfect drainage, an acidic to slightly acidic mineral substrate, low in organic matter, and a sunny exposure. It is suitable for cultivation in troughs or in reconstructed high mountain rock gardens, but remains delicate to maintain sustainably in the lowlands.