Phlox subulata 'Emerald Cushion Blue'

Phlox subulata 'Emerald Cushion Blue'  • 

Photo: Phlox subulata 'Emerald Cushion Blue'

Photo: Phlox subulata 'Emerald Cushion Blue'
Photo: Phlox subulata 'Emerald Cushion Blue'

General description

There are many selections of Moss Phlox, all of them forming a low mound or cushion of dark green needle-like leaves, smothered by tiny flowers in late spring. This is a vigorous variety, with a showy display of deep lavender-blue flowers. Exhibits excellent disease resistance. Wonderful in the sunny rock garden, for edging, or in mixed containers. Drought tolerant, once established.

  • Flower Colour - Light Blue
  • Blooming Time - Mid Spring, Late Spring
  • Foliage Color - Deep Green
  • Flower Head Size - Very Small
  • Height - 10-15 cm 4-6 inches
  • Spread - 45-60 cm 18-23 inches
  • Foot Traffic - Light
  • Growth Rate - Medium 

Plant requirements

  • Sun Exposure - Full Sun
  • Soil Type - Normal, Sandy or Clay
  • Soil pH - Neutral, Alkaline or Acid
  • Soil Moisture - Average or Dry
  • Care Level - Easy 
  • USDA Zone: 2-9


  • Clip plants lightly immediately after blooming to encourage a dense habit.
  • Clumps may be ripped apart and divided in early fall, after 3 to 4 years.
  • Requires good drainage. 

Practical use

  • Alpine & Rock
  • Containers
  • Drought Tolerant
  • Edging
  • Evergreen
  • Ground Cover
  • Wild Flower


10 - 20 cm
Soil type
Clay, Loam, Sand
Full sun
Acid, Alkaline, Neutral
Moist but well-drained