Leymus, Blue Lyme Grass, Sand Rye Grass 'Blue Dune'

Leymusarenarius

Family
Poaceae (poh-AY-see-ee)
Genus
Leymus (LEE-mus)
Species
arenarius (ar-en-AR-ee-us)
Synonym
Elymus arenarius
Sun Exposure
Full Sun
Foliage
Grown for foliage
Herbaceous
Provides Winter Interest
Height
24-36 in. (60-90 cm)
Spacing
12-15 in. (30-38 cm)
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
Hardiness
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Danger
Plant has spines or sharp edges; use extreme caution when handling
Bloom Color
Brown/Bronze
Cream/Tan
Bloom Time
Mid Summer
Late Summer/Early Fall
Other Details
Category
Ornamental Grasses and Bamboo
Water Requirements
Drought-tolerant; suitable for xeriscaping
Foliage Color
Blue-Green
Where to Grow
Bloom Characteristics
Bloom Size
Other details
May be a noxious weed or invasive
Soil pH requirements
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)
Patent Information
Non-patented
Propagation Methods
By dividing the rootball
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From seed; direct sow outdoors in fall
Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
Regional

This plant is said to grow outdoors in the following regions:

Santa Rosa Beach, Florida

Augusta, Georgia

Clawson, Michigan

Grand Rapids, Michigan

Ludington, Michigan

Rochester, Minnesota

Levittown, New York

Malvern, Pennsylvania

Sumter, South Carolina

Clarksville, Tennessee

Austin, Texas

La Vernia, Texas

Richmond, Texas

Newport News, Virginia

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Featured Videos

Gardener's Notes:

2
positives
4
neutrals
1
negative
Sort By:
Sort By:
G
Rochester, MN (Zone 4b) | July 2021 | neutral

This is a beautiful grass, but requires good judgement in placement. A small, semi-contained area at our cottage in the Indiana Dunes (z...Read More

V
(Zone 8a) | May 2016 | neutral

Against my suspicions and advice from people who grow this, I planted mine inground, with no restraints. I will be watching it very closely.....

R
Downingtown, PA | September 2015 | neutral

I've worked around it some in a few accounts. It is easy to grow in any sunny place with well-drained soil. If all by itself in a confine...Read More

C
ROSLINDALE, MA | May 2015 | negative

Beautiful blue foliage, but its deep fast-spreading rhizomes are difficult to restrain in a mixed border. This is one of the species that...Read More

M
M
Timnath, CO (Zone 5b) | May 2015 | neutral

The little ground squirrels love to eat this! Just planted it and hope it survives the little rats :/. Giving a neutral for now, will up...Read More

R
Clawson, MI | May 2015 | positive

Many years ago I planted a plug of this grass in an above ground planter box on the patio, thinking it would be a temporary addition to t...Read More

D
Sumter, SC | May 2010 | positive

This is a beautiful ornamental grass that keeps it's dramatic color here in central SC throughout most of winter. The color reminds me o...Read More

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