Morning glories (Ipomoea) need a spot in full sun. If there's too much shade, they won't bloom. Water them throughout the summer to encourage lots of flowers. Fertilize them sparingly unless your garden has very poor soil; too much fertilizer encourages leafy growth at the expense of blooms. In areas that experience short summers, start your morning glory seeds indoors a month or two early. Most of the season can pass before morning glories grow large enough to bloom. Many a gardener has grown them and seen only a small handful of blooms before autumn frost kills the plant.