Petrocoptis glaucifolia x hispanica is a garden hybrid resulting from the crossing of the two Iberian species of the genus, belonging to the Caryophyllaceae family. It appeared in cultivation through spontaneous hybridization between the two parents.
It forms dense and spreading bushy clumps, reaching 10 to 15 cm in height when in bloom. The medium green, oval foliage is intermediate between the glaucous of P. glaucifolia and the bright green of P. hispanica. The flowering stems are slender and numerous, giving the plant in bloom a very airy appearance despite the density of the clump.
The flowers with five slightly notched petals are a soft pink, intermediate between the bright pink of P. glaucifolia and the white of P. hispanica. The flowering is abundant, covering the plant to the point of almost entirely masking the foliage.
In cultivation, it shares the requirements of its parents, perfect drainage, poor mineral soil, and a sunny to semi-shaded exposure, with a marked sensitivity to stagnant winter moisture. Its flowering in rock gardens is particularly spectacular.