WITCHGRASS, Panicum capillare L. 1, entire plant; 2, panicle; 3, seeds. Annual with fibrous roots, reproducing by seeds. Stems 10 to 30 inches (25 to 75 cm) tall, often spreading and branched. Leaves and especially the leaf sheaths covered with dense soft hairs. Panicle much branched, becoming spreading and open at maturity, often breaking from stem and blown about by wind. Seeds 1/16 inch (1.5 mm) long, greenish or grayish, shiny, smooth, readily separated from hulls when ripe. Found in small grain stubble, cultivated fields, meadows, gardens, and waste areas. Seed frequently spread in small-seeded crop seeds.