This section is from the book "A Manual Of Weeds", by Ada E. Georgia. Also available from Amazon: A Manual Of Weeds.
Native. Annual. Propagates by seeds.
Time of bloom: July to September.
Seed-time: Late August to November.
Range: Maine to Nebraska, southward to Florida and Texas.
Habitat: Moist, rich soil; fields and waste places.
A large, coarse grass, the culms stout, flattened, succulent, at first erect, two to three feet high, later becoming decumbent and geniculate, the stalks lengthening, sometimes to six feet, branching, and sending up flowering stalks at all the upper joints. Sheaths loose, smooth, flattened, the ligule a ring of hairs; blades six to eighteen inches long, a quarter-inch to an inch wide, rough on the edges and the central nerve. Panicles large, spreading, six inches to more than a foot in length, the spikelets crowded, brown or purplish, the seeds resembling those of Old Witch but larger. Cattle and horses are fond of the succulent, sweetish stems when young, but it soon becomes hard and innutri-tious, and nearly worthless as dry forage. (Fig. 7.)
Close cutting before seed development.
Fig. 7. - Sprouting Panic-grass (Panicum dichotomiflorum). X 1/6.