Helianthemum syriacum

Perennial sub-shrub of the Cistaceae family, native to the eastern Mediterranean basin — Syria, Lebanon, Turkey, Greece, and also present in the south of the Iberian Peninsula and North Africa. It colonizes open garrigues, dry stony slopes, and rocky limestone lawns, at low and medium altitude, in conditions of marked heat and aridity.

The plant forms a rounded bush, quite ample for the genus, reaching 30 to 50 cm in height, with woody stems at the base, upright to slightly arched. The foliage is one of its most distinctive features: the leaves are narrow, linear to oblong, with a pronounced gray-green to silvery-gray, densely tomentose, giving the whole a very recognizable ashen hue, even outside flowering.

The flowers are bright and pure yellow, large for the genus, with five widely open petals, carried in loose clusters well above the foliage. The sepals are also tomentose and whitish, forming well-visible calyces that persist after the petals fall. In its natural habitat, its flowering extends from April to June.

In cultivation, it requires full sun, a very well-drained soil, poor to moderately calcareous, and tolerates prolonged summer drought well. Its hardiness is average; in regions with cold and wet winters, protection or a sheltered location is necessary. It is suitable for dry Mediterranean gardens and sunny rockeries.