Phlox subulata

Phlox subulata moss phlox

Plant grows in the wild/spontaneouslyPlant is cultivatedPlant is native to PA Add to MyPlants View Locations

Moss phlox or creeping phlox is a native, evergreen to semi-evergreen perennial that is part of the phlox family. It forms low, mat-like ground cover up to 6 inches tall and spreads 2 to 3 feet wide, resembling moss. From April to May, fragrant tubular flowers with five notched lobes bloom in shades of pink, purple, and white, offering many pollinators like bees, butterflies, and hummingbirds a sweet treat of nectar and pollen.

The leaves are needlelike, linear to awl-shaped, and arranged in dense, opposite pairs along the stems. They are evergreen to semi-evergreen, with entire (toothless) margins, and are typically stalkless or clasping. Their sharp tips and compact tufts give the plant its moss-like texture.

Moss phlox thrives in full sun, though it tolerates partial shade in hot, humid climates. It prefers well-drained, sandy or rocky soils that are slightly acidic to neutral in pH, but it can adapt to dry and hot environments once established. Native to the central and eastern regions of Canada and the United States, including most of Pennsylvania, it thrives on dry slopes, rocky barrens, and open woodlands, especially in the Appalachian Mountains.

Contributed by: Olivia Coelho

Occasional in serpentine barrens and on dry, rocky slopes.  Prefer full sun and well-drained, sandy or rocky soils.

Present throughout the state except north-west.

Range:  Native to the central and eastern regions of Canada and the United States.

Wetland code: Not classified

Flowers April to June.  Blooming period is 3 to 4 weeks.

Inflorescence  loose cymes of 2 to 8 flowers, at tips of stems

Flowers  corolla deep pink to violet or white; 5 flat, petal-like notched lobes extending from corolla tube; 5 green to brown sepals, 5 stamens; ¾″ across

Leaves  small, stiff (needle-like), tufted, evergreen to semi-evergreen;  linear to awl-shaped; opposite, entire; up to 1″ long

Stem  light green to reddish purple; sprawling, terete, pubescent

Fruit  dry 3-valved capsule with 1 to 4 (most often 3) seeds per locule; self-seeding

Height  4 to 6 inches; spread 2 to 3 feet

S-rank:  S5 (Secure)
G-rank:  G5 (Secure)

Main pollinators are bees while butterflies and hummingbirds are frequent nectar visitors.  Foliage, flowers and seeds are occasionally browsed by small mammals such as rabbits and voles, and targeted by sap-feeding insects including aphids and phlox plant bugs.

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