Data provided by the participants of the Consortium of California Herbaria

View additional distribution information on the Jepson eflora

Blue wildrye (Elymus glaucus) is a perennial bunchgrass that grows upright to about 4 feet. It grows as narrow tufts of several erect stems and spreads outward by rhizomes.  It is a common and widespread species native to North America from Alaska to New York to northern Mexico. 

Blue wildrye is a crucial soil stabilizer, habitat creator, and food source for local wildlife. The seeds are a food source for native mammals and birds.

This is a popular accent grass for the garden, providing green to blue green color and texture contrast. It can hybridize with other species of Elymus to produce highly variable forms. 

Plant type

Grass

Size

1 - 5 ft Tall
1 ft Wide

Form

Upright

Growth rate

Fast

Dormancy

Summer Semi-deciduous

Calscape icon
Color

Yellow

Flowering season

Summer

Special uses

Deer resistant

Sun

Full Sun, Partial Shade

Water

Low

Summer irrigation

Max 2x / month once established

Ease of care

Easy

Cold tolerance

Tolerates cold to -15° F

Soil drainage

Medium

Soil description

Tolerates a wide variety of soils. Tolerates serpentine soil.,Tolerates sodic soil..
Soil PH: 5.0 - 8.2

Propagation

For propagating by seed: No treatment.

Sunset Zones

1, 2*, 3*, 4*, 5*, 6*, 7*, 8, 9, 10*, 11, 14*, 15*, 16*, 17*, 18*, 19*, 20*, 21*, 22*, 23*, 24*

Site type

Prairies, grasslands, meadows, other open places

Plant communities

Chaparral, Foothill Woodland, Lodgepole Forest, Red Fir Forest, Subalpine Forest, Valley Grassland, Yellow Pine Forest

Common native grass associates in the far west coastal prairies are Danthonia californica, Deschampsia caespitosa, Festuca idahoensis and Nassella pulchra. Can be combined with virtually any woodland or chaparral plants. Seaside daisy around its base creates a stunning display.

Bats
Caterpillars
Butterflies

Butterflies and moths supported

1 confirmed and 9 likely

Confirmed Likely

Chionodes figurella

Apamea cuculliformis

Glassy Borer

Apamea devastator

Nevada Skipper

Hesperia nevada