Agrostis gigantea (Redtop)

Formerly A. alba. Cool season, rhizomatous, open perennial sod-former with a vigorous fibrous root system. Adapted to moist or moderately wet sites. Tolerates acidic and nutritionally poor soils as well as periodic flooding. Palatable and nutritious to livestock and wildlife. Used as pasture and hay. Varieties listed below.

DISTRIBUTION / ADAPTATION

Agrostis Gigantea (Redtop) map.png

INFORMATION & ATTRIBUTES

Family: Poaceae

Duration: Perennial, short lived

Growth Habit: Graminoid

Native Status: Introduced

Season: Cool season

Growth Form: Rhizomatous

Mature Height: 24 in.

Annual Precipitation: 28-60 in.

Drought Tolerance: Low

Shade Tolerance: Intolerant

Elevation:

Wetland Indicator Status: FACW

Fire Resistance: High

Fire Tolerance: Low

SOIL ADAPTATION

Coarse Texture: No

Medium Texture: Yes

Fine Texture: Yes

Salinity Tolerance: Low

CaCO3 Tolerance: Low

pH Range: 4.5-8.0


SEEDING NOTES

Seeds per Pound: 4,845,100

Seeding Rate: 29 PLS lbs/acre

Season: Spring/Fall

Days to Germination:


VARIETIES

Streaker - Fine-leaved, cold-hardy variety. Primarily used for hay and pasture in mountain meadows. Establishes easily from seed. (Released 1982, source of ecotype: Illinois)