Poa secunda ssp. ampla

Poa secunda ssp. ampla

Big bluegrass

Previous scientific name(s): Poa ampla

Formerly known as Poa ampla. Cool season, perennial bunchgrass with shallow, fibrous root system, sometimes spreading by short rhizomes. Occurs on a variety of sites but is intolerant of poorly drained soils or high water tables. Begins growth in late summer to early fall and stays green later than other species. Resumes growth in very early spring and ripens in early to late summer depending on available moisture. Excellent palatability to livestock and wildlife year-round. Seeds valued by birds and small mammals.

Varieties: 
Sherman

Begins spring growth and matures very early. It generally grows 3 ft. tall, producing abundant forage that is blue-green in color. Useful for all conservation plantings in the Pacific Northwest, ID, NV, and northern CA. (Released 1945, source of ecotype: Sherman County, OR)

Variety Release Notes: 

Species Attributes

Height: 
25 
in. or taller
Season: 
Cool
Life Form: 
Bunchgrass
Native or Introduced: 
Native
Precipitation: 
10 
in.
Sun & Shade Tolerance: 
Full Sun
Part Sun
Elevation: 
ft.

Soil Texture

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

Soil pH

Acidic: 
Marginal
Neutral: 
Best
Basic: 
Not Adapted
Seeding Rate: 
- 4 
PLS lbs/Acre
Pure Seed per Bushel: 
14.50 lbs.
Seeds per Pound: 
882,000
Planting Season: 
Spring
Fall
Germination Time: 
Days
Mycorrhizal Dependent: 
Yes