Big Bluestem (Andropogon gerardii), 400 Certified Pure Live Seed, True Native Seed FREE SHIPPING Number of seed is Pure Live Seed, not bulk Species is US Native, not introduced alien We grow the seed so we control quality A 4 to 10 tall native perennial warm season clump grass. A principal grass of the Tall Grass Prairies preferring medium to moist soils and full sun sites.