Perennial of the Polemoniaceae family, this selection of Phlox pulvinata shares the origin and natural habitat of the type species, confined to scree, rocky lawns, and windy ridges of the Rockies, between 2,800 and 4,000 meters in altitude.
Like the species, it forms a dense and tight cushion, very low, not exceeding 3 to 5 cm in height. The linear-needle-like leaves, rigid and ciliated, of a medium to slightly grayish green, are organized in interlocking rosettes that give the cushion its characteristic texture, prickly and compact.
What distinguishes this selection from the type species, whose color can range from pure white to very pale lilac, is the distinctly more pronounced hue of its flowers, lavender to lilac-blue, borne close to the cushion on very short stems, with a small yellow-orange center. The name 'Blue' is not validated in the main horticultural sources and likely corresponds to a nursery selection with limited distribution, chosen for this more vivid color.
In its natural habitat, its flowering extends from June to August depending on the altitude. In cultivation, the required conditions are identical to those of the species, perfect drainage, lean and mineral soil, full sun, with protection against stagnant winter moisture.