A perennial of the Asteraceae family, Centaurea montana is widely spread in the mountainous regions of central and southern Europe, from the Pyrenees to the Carpathians and the Balkans, where it occupies fresh meadows, forest edges, and grassy slopes, generally between 500 and 2,000 meters in altitude. Naturalized far beyond its original range, it has established itself in many temperate regions.
It forms spreading clumps with stolons, 30 to 60 cm in height, with characteristic winged stems, slightly tomentose. The leaves are lanceolate, entire or slightly wavy, grayish-green, whitish underneath.
The flower heads are solitary, relatively large, borne on upright stems. The peripheral ligules, long and cut into irregular strips, are an intense and bright blue-violet, rarely pink or white depending on the cultivars, surrounding a heart of darker purple-violet tubular flowers. This contrast between the peripheral blue and the dark center is one of the most characteristic effects of the species.
In its natural habitat, flowering extends from May to July. In cultivation, severe pruning after the first flowering often induces a resurgence at the end of summer.
It tolerates varied soils, well-drained to fresh, in full sun or light partial shade. Hardy and very accommodating, it readily reseeds itself and can gradually colonize an area with its short rhizomes, making it a good natural ground cover for slopes and semi-wild borders.