Creeping Phlox 'Emerald Cushion Blue'

Emerald Cushion Blue Creeping Phlox | Phlox subulata ‘Emerald Cushion Blue’ | Moss Phlox ‘Emerald Cushion Blue’ | Creeping Phlox ‘Emerald Cushion Blue’

Emerald Cushion Blue Creeping Phlox is a charming, sun-worshipping semi-evergreen perennial groundcover prized for its spectacular, dense profusion of delicate, star-shaped pale lavender-blue flowers that completely blanket the plant in early to mid-spring. This exceptionally tough, cold-hardy selection is known for its low-growing, mat-forming habit and fine, needle-like green foliage that provides beautiful, mossy texture to the landscape even when not in bloom. Its nectar-rich blossoms are a vital early-season food source and an absolute magnet for butterflies and bees, making it a spectacular, low-maintenance spiller and cascading edger for rock gardens, retaining walls, sloping banks, and sunny landscape borders. With its soft, cool-toned color and reliable performance through challenging conditions, Emerald Cushion Blue offers an extraordinary display of vibrant spring blooms and year-round structure with exceptionally straightforward care.

Growing Emerald Cushion Blue Creeping Phlox

Light: Full sun; thrives in intense, direct sunlight (at least 6 to 8 hours per day) which is absolutely required to produce the most abundant, dense carpet of blooms and maintain a tight, sturdy spreading form.

Soil: Light, sandy, or gravelly, well-drained soil; highly adaptable to poor, rocky soils as long as drainage is excellent. It is extremely susceptible to root rot in heavy, waterlogged clay or overly rich, wet potting mixes.

Water: Low to moderate; water regularly until established, then allow the top few inches of soil to dry out between waterings. It is exceptionally drought-tolerant once mature and strongly dislikes consistently wet feet.

Maintenance: Exceptionally low maintenance. Shear the foliage back lightly (about one-third to one-half) immediately after the spring blooms fade to encourage dense, lush new growth, prevent the center from dying out, and maintain a neat, compact habit.

Wildlife: Highly attractive to early-season butterflies, bees, and other beneficial pollinators; naturally deer- and rabbit-resistant.

Hardiness: Perennial in USDA zones 3–9; exceptionally cold-hardy and reliable across a wide range of climates provided it has excellent winter drainage.

Shipping Info

Emerald Cushion Blue Creeping Phlox plants are shipped as healthy young starts in 4" nursery pots. Allow 1–2 weeks after arrival for plants to recover from shipping and resume active growth before repotting or planting outdoors.