Helichrysum sibthorpii is a perennial from the Asteraceae family, native to Greece, where it grows in rocky areas, screes, and sunny stony slopes of mountain ranges, particularly in Macedonia and Thessaly, at medium to high altitudes.
It forms a low, spreading clump, with short, upright stems, entirely covered with a dense tomentum that gives the whole a very soft and very homogeneous silvery blue-gray appearance. The leaves are spatulate to oblong, broad, arranged in loose rosettes along the stems, with a characteristic ash-gray green, thick and felted on both sides.
The flowering is particularly original within the genus: the buds are globular, pink to salmon pink, with a pearly and slightly translucent appearance, resembling small pearls. When open, the capitula reveal a bright yellow to orange central disc, surrounded by cream to pinkish-white bracts that spread out in a cup, creating a very pleasing chromatic contrast between the colored bud and the open flower. The bright red axillary buds visible at the base of the inflorescences further add to the visual richness of the plant in bloom. In its natural habitat, flowering extends from June to August.
It requires full sun, a very well-drained and rather calcareous substrate, and dislikes stagnant moisture in any season. Hardy to about -10°C in dry soil, it finds its ideal place in a well-exposed rock garden or between the stones of a wall.