Examples from the Web for bluestem
Nests are placed on the ground, usually in bluestem pasture, but in any case grasses.The Breeding Birds of Kansas|Richard F. Johnston
The study area includes the zone of transition from bluestem or tall-grass prairie to the buffalo grass or short-grass prairie.
The uppermost station was situated in bluestem pasture without benefit of shade from trees.Fishes of Chautauqua, Cowley and Elk Counties, Kansas|Artie L. Metcalf
Evidently the tree does not become established readily on bluestem prairie.
Of young trees there were most on the bluestem prairie area, less on the former pastures and least on the fallow fields.