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Grass Like

Leymus arenarius 'Blue Dune'

lyme grass 'Blue Dune'

Densely tufted semi-evergreen to evergreen grass about 1.5m tall, with long rhizomes, forming loose, spreading clumps of arching, pale, steel-blue leaves about 60cm long. Produces stiff, upright stems beraing spike-like racemes 35cm long of blue-grey then buff spikelets throughout summer

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Plant nurseries
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Ultimate height

1–1.5 metres

Time to ultimate height

5–10 years

Ultimate spread

Wider than 8 metres

Chalk

Loam

Sand

Moisture

Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

South–facing or West–facing or East–facing

Exposure

Exposed or Sheltered

Drought resistance

Yes

Hardiness
Hardiness ratings
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1a: under glass all year (>15C)
H1b: can be grown outside in the summer (10 - 15)
H1c: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20)

Botanical details

Family: Poaceae
Native to GB / Ireland: No
Foliage: Evergreen or Semi evergreen
Habit: Clump forming, Tufted
Genus: A genus of drought and salt-tolerant perennial grasses, found in Europe, Asia and the Americas, with long foliage in shades of silvery green, blue and grey
Name status: Accepted

How to grow

Cultivation

Grow in any well-drained soil in full sun. Suited to coastal areas for stabilising sand dunes. Spread is indefinite so may be difficult to contain so not suited to small gardens. See ornamental grasses cultivation

Propagation

Propagate by division from mid spring to early autumn

Suggested planting locations and garden types

Coastal
Cottage and informal garden
Wildflower meadow
Wildlife gardens
Prairie planting
Banks and slopes
Ground cover

Pruning

Cut down dead growth in autumn

Pests

Generally pest-free

Diseases

Generally disease-free

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