Introduced warm season annual bunchgrass. Grows 3 – 8’ tall with stems growing from extensively creeping rhizomes. The blades are flat, blue green and often splotched with purple caused by a bacterial disease. The panicles are large, open with branchlets mostly in whorls of four. Grows in fields and waste places. Under certain growing conditions it produces, prussic acid which is poisonous to livestock. Very similar to Johnsongrass.