Phyteuma orbiculare

Perennial of the Campanulaceae family, the round-headed rampion is widespread in the mountains of Central and Southern Europe, from the Alps to the Carpathians, including the Jura and the Apennines. It frequents limestone lawns, high-altitude meadows, and sunny rocky slopes, generally between 800 and 2,500 meters.

It forms upright clumps of 15 to 40 cm, bearing basal leaves that are oval to lanceolate, crenate, long-petioled, of a bright green, while the stem leaves are progressively reduced and sessile along slender, elongated stems.

The flower heads, globular to ovoid, are dense and well-rounded, of a deep violet-blue to violet-purple. The tubular flowers are tightly packed in a compact mass, with exserted styles giving them a slightly bristly appearance. In its natural habitat, its flowering extends from June to August depending on the altitude.

Unlike Phyteuma hemisphaericum, it tolerates and even prefers calcareous substrates. In cultivation, it requires well-drained soil, poor to moderately rich, in full sun. Relatively accommodating among rampions, it naturally integrates into an alpine rock garden.