Achnatherum hymenoides

Achnatherum hymenoides

Indian ricegrass

Previous scientific name(s): Eriocoma cuspidate, Oryzopsis hymenoides, Stipa hymenoides

Formerly known as Oryzopsis hymenoides. Densely tufted, cool season, very drought tolerant, perennial bunchgrass adapted to deep, well-drained soils. Forage is highly palatable and nutritious to livestock and wildlife. Seeds are sought by birds and small mammals. Sometimes occurs as dominant species throughout its range. Excellent for rangeland improvement and land reclamation.

Varieties: 
Nezpar

Nezpar was selected for release over 125 other accessions. It demonstrated consistently good establishment and desirable vegetative characteristics. Nezpar outperforms Paloma in the northern U.S. in yield and stand survival. (Released 1978, source of ecotype: Whitebird, ID)

Variety Release Notes: 
Paloma

Paloma was the first strain of Indian ricegrass named and released as an improved variety. Produces excellent palatable forage and generally grows 12 to 24 inches tall. Often used in range seedings for reclamation mixtures in the southern half of the species range. (Released 1974, source of ecotype: Pueblo, CO)

Variety Release Notes: 
Rimrock

Very cold hardy and better adapted to northern latitudes than Nezpar. Prodigious seed producer. Similar in establishment and vegetation characteristics to Nezpar and Paloma. (Released 1996, source of ecotype: Billings, MT)

Variety Release Notes: 
Star Lake
White River

Species Attributes

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

Soil Texture

Coarse: 
Best
Moderately Coarse: 
Best
Medium: 
Best
Moderately Fine: 
Marginal
Fine: 
Not Adapted

Soil pH

Acidic: 
Not Adapted
Neutral: 
Best
Basic: 
Marginal
Seeding Rate: 
- 12 
PLS lbs/Acre
Pure Seed per Bushel: 
44.90 lbs.
Seeds per Pound: 
141,000
Planting Season: 
Fall
Germination Time: 
Days
Mycorrhizal Dependent: 
Yes