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Phlox subulata Emerald Cushion Blue


Great for rock gardens

This plant forms a ground hugging mat of dark green needle like leaves, smothered in tiny flowers through the spring. These are a delicate lavender-blue. This is a vigorous variety of Phlox, with excellent disease resistance.


A decorative addition to a rock garden, as edging to borders, or in a mixed container. It is at its best in full sunlight.


Plant in well-drained sandy or normal soil and trim after flowering to encourage growth. Divide every three to four years in autumn to reinvigorate.

Plant details

Item Number: 424883

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In depth plant information

Property Value
Plant type Alpine, Perennial herbaceous
Flower colour
Foliage colour
Typically available April - September
Season of interest Spring, Summer
Flowering May - June
Evergreen Yes
Plant height 10 cm - 15 cm
Plant width 50 cm - 60 cm
Fragrant flowers Yes
Attracts bees Yes
Attracts butterflies Yes
Plant height in 5 years 10 cm
Hardiness zone (?) H5

Will perform best in these conditions

Property Value
Soil type Chalk, Loam, Sand
Light exposure Full sun, Part shade
Soil drainage Well drained
Planting instructions

Water the plant in its pot thoroughly before planting – give it a good soaking. Prepare the area by digging a hole twice the size of the pot. Dig compost into the base of the hole. Remove the pot and position the plant in the hole, with the top of the rootball about level with the surrounding soil. Refill the planting hole with a mixture of garden soil and compost, firming as you go. Water in well and keep well watered during the plant's first year.

Planting site Rock garden, Mediterranean garden, Gravel garden, Garden edging, Coastal or drought resistant, Cottage garden, Informal garden, Flower border and beds

This item is available in-store only and not for home delivery.

Click on "Check store availability" to see whether the 3 stores nearest to you are likely to have stock. Please note that this information is for guidance only, and we recommend calling the store to confirm their current stock before you set off.


Available to buy in-store

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Typically available

From April to September