Morning Glory, a large group of flowering annual or perennial vines related to the sweet potato. More than half of the 400 known species grow in tropical America. The name refers to the fact that the flowers open early in the morning.The morning glory has showy, funnel-shaped flowers that open early in the morning.
Morning glories often climb 15 to 20 feet (4.5 to 6 m) high. Many species have milky-juiced stems and very large, fleshy roots. The broad, heart-shaped leaves grow alternately on the stems. The showy, funnel-shaped flowers, usually solitary, may be red, purple, blue, yellow, white, or a mixture of colors. Morning glories are often grown to screen unsightly fences or other objects, or to shade porches. They are usually started from seeds that have been softened in water.
The common morning glory is widely distributed in the eastern United States and in the tropics. Other species include the bush morning glory, the large-flowered Japanese morning glory, and the manroot, or man-of-the-earth, of the eastern United States.
The common morning glory is Ipomoea purpurea; bush, I. leptophylla; Japanese, I. nil; manroot, I. pandurata. All belong to the morning glory family, Convolvulaceae.