Blue-Lyme Grass (Elymus arenarius (Leymus arenarius))-Hort Answers - University of Illinois Extension
University of Illinois Extension

University of Illinois Extension

Hort Answers

Ornamental Grass

Blue-Lyme Grass
Elymus arenarius (Leymus arenarius)

Blue Lyme Grass <em>Elymus arenarius</em>
Blue Lyme Grass Elymus arenarius

Steel blue flat foliage that tends to grow in an arching habit. Useful for very specific situations as it is an aggressive grass. Tall flower spikes in mid summer turning beige.

This is a running cool season grass.

Tolerant of a wide range of soils from wet to dry and full sun to partial shade. Tends to be less invasive in dry, clay soils. 
'Blue Dune' 24-30" very heat tolerant 
Mature Height
3-4 Feet
USDA Hardiness Zone
4 - 10 
Soil Conditions
Moist, Well-Drained
Exposure/Light Requirements
Full Sun
Partial Sun/Shade
Foliage Color
Pests and Problems

Environmental Damage

Additional Notes
To keep foliage fresh and blue periodic cutting back during the season encourages new foliage and keeps the plant fresh looking with good blue. color. This grass is invasive but may have use as a soil erosion control plant on embankments.


Related Resources
Home, Yard & Garden Pest Guide
Illinois Commercial Landscape and Turfgrass Pest Management Handbook
U of IL - Distance Diagnosis through Digital Imaging
U of IL - Plant Clinic