Elymus wawawaiensis

Elymus wawawaiensis

Snake River wheatgrass

Formerly thought to be an ecotype of Pseudoroegneria spicata ssp. spicata. Cool season, very drought tolerant, long-lived perennial bunchgrass. Very similar to Bluebunch wheatgrass in appearance, growth characteristics, and adaptation, but more drought tolerant. Widely adapted to the sagebrush steppe of the Intermountain West. Very palatable to livestock and wildlife, especially in the spring. However, heavy spring grazing is detrimental to vigor and longevity.

Varieties: 
Secar

A low-elevation dryland ecotype with excellent drought tolerance and longevity. Matures early and produces numerous fine stems and leaves. Originally released as a variety of Bluebunch wheatgrass. (Released 1980, source of ecotype: Snake River gorge near Lewiston, Idaho)

Discovery

Species Attributes

Height: 
13 
- 24 
in.
Season: 
Cool
Life Form: 
Bunchgrass
Native or Introduced: 
Native
Precipitation: 
in.
Sun & Shade Tolerance: 
Full Sun
Part Sun
Elevation: 
ft.

Soil Texture

Coarse: 
Average
Moderately Coarse: 
Best
Medium: 
Best
Moderately Fine: 
Average
Fine: 
Marginal

Soil pH

Acidic: 
Not Adapted
Neutral: 
Best
Basic: 
Marginal
Seeding Rate: 
12 
- 15 
PLS lbs/Acre
Pure Seed per Bushel: 
20.70 lbs.
Seeds per Pound: 
120,000
Planting Season: 
Spring
Fall
Germination Time: 
Days
Mycorrhizal Dependent: 
Yes