poa trivialis rough bluegrass, rough-stalked meadow-grass or rough meadow-grass, is perennial plant regarded in us as

nature bluegrass background beautiful summer field grass plant outdoor natural growth green fresh season bright closeup yellow spring outdoors meadowgrass macro trivialis agriculture sunny landscape poa garden leaf farm sward environment meadow rural grow young plot agronomy rough animals feed floral flora flower flowering greensward lawn livestock environmental protection mu us freshwater