This morning glory, with many familiar names from flying saucer to the granny vine, can be a perennial, herbaceous vine but is most often an annual.  It reseeds in successive years in cooler zones than its tropical origin of Mexico.  It is recognized for its blue, white, or variously colored funnel-shaped flowers and twining nature. 

The large, showy flowers open in the morning, then fade and drop by evening. 
Grow it in full sun to partial shade, and it will perform well in poor soil with little or no fertilizer.  This vine proliferates but will need support or other plants to climb up.