Phlox subulata 'Emerald Cushion Blue' – Alpine Creeping Phlox (Set of 3 or 6)

Emerald Cushion Blue is an alpine phlox, a dense evergreen mat smothered in lavender blue flowers through April and May.

It grows only 10 to 15cm tall but spreads to 30 to 45cm, forming a firm cushion of needle like dark green leaves that stays green all year. In spring the whole mat disappears under flower. It is at its best tumbling over a wall or the edge of a raised bed, threading through a rockery, or filling the front of a gravel border as ground cover.

Give it full sun and sharply drained, poor to moderately fertile soil; sandy or gritty ground suits it best and it copes with dry spells once established. It asks for almost nothing beyond a light trim after flowering to keep the cushion tight. Plants arrive established in 1 litre root balls, ready to plant out or pot on.

Cultural Information

• Common Name: Moss phlox, creeping phlox
• Fully Grown Height and Spread: 10 to 15cm tall and 30 to 45cm wide
• Growth Habit: Low, mat forming cushion
• Perfect For: Rockeries, alpine gardens, dry walls, border edges, ground cover and containers
• Foliage: Dense, needle like dark green leaves, evergreen
• Flowering Time: April to May
• Planting Position: Full sun. Copes with dry soil once established and grows well in containers and wall tops
• Soil Type: Sharply drained, poor to moderately fertile. Sandy or gritty ground is ideal
• Hardiness: Fully hardy in the UK
• Maintenance: Trim lightly after flowering to keep the cushion neat. Very little else is needed
• Seasonal Interest: Spring
• Type: Hardy evergreen alpine perennial