Poa

Poa - Perennial and annual grasses, few worth cultivating. P. fertilis has dense tufts of long, soft, smooth, slender leaves, 10 to 18 inches high, and arched gracefully on every side. In the flowering season they bear airy, purplish or violet-tinged panicles, rising to twice the height of the tufts. Isolated on lawns the plant is effective, and if in good soil gives no trouble. P. aquatica is a stout native grass, 4 to 6 feet high, usually occurring in wet ditches, by rivers, and in marshes. It is one of the boldest and handsomest of hardy grasses for the margins of artificial water or streams, associated with such things as the Typhas, Acorus, Bulrush, and Water Dock. It increases rapidly.