Phlox subulata, commonly known as moss phlox, mountain phlox, or creeping phlox, is an upright, mat-forming, sun-loving perennial that grows 6" high but spreads 24" wide. The plant is known for its creeping habit, linear to awl-shaped leaves (which retain some green in winter), and tufts of notched flowers in mid-spring. The species is native to dry, rocky, or sandy regions, open woodlands, slopes, and Appalachians south of Tennessee. Loose clusters of fragrant, tubular flowers bloom between April and May. Flowers range in color from red-purple to violet-purple, pink, or rarely white. There are five petal-like, rounded lobes on each flower. The lobes are notched in a distinctive pattern. Leaves are linear to awl-shaped and green in color. Awl-shaped is the Latin word for subulata, which refers to the leaves. The common name moss phlox is derived from the fact that vegetation mats are said to resemble moss. Several cultivars of this plant are available in the marketplace and feature flower colors such as blue/purple, pink, red, and white. Butterflies and other insect pollinators are attracted to this plant.
A humusy, medium-moisture, well-drained soil with full sun is best. Plants generally appreciate some dappled sun in areas with hot, humid summers. Good soil drainage is essential. The plants grow well in sandy or gravely soils and tolerate hot, dry conditions better than most other phlox species. When the conditions are right, plants will self-seed. After flowering, cut back stems by half to maintain form, promote denser growth, and stimulate reblooming.
