There are many ways to utilize these colorful, carefree vines in your yard. Use them to quickly cover up an unsightly chain-link fence, for example. Or grow them on a trellis to provide a living privacy screen for your deck, patio, or balcony. They also create a lovely backdrop for the back of the border.

Morning glories are delightful by themselves but create an especially magical quality when different varieties are mixed. Don't be afraid to try growing them with other fast-growing annual vines, such as mandevilla, black-eyed Susan vine, scarlet runner bean, hyacinth bean, or passionflower.

Morning glories grow best—and blossom most prolifically—in full sun, so be sure to plant them where they'll get at least 8 hours of direct light per day during the growing season. Once established they're somewhat drought-tolerant, but the plants look best if watered regularly. Otherwise, their large, heart-shape leaves have a tendency to wilt during the heat of the day.

Spreading a 2- to 3-inch-deep layer of mulch over the soil after you plant them will help keep weeds at bay and allow the soil to stay moist longer so you have to water less often.

If you live in an area with short summers, it's helpful to plant morning glory seeds six to eight weeks before your last expected frost date in spring to help give them a head start on the season. Otherwise, purchase transplants from your local garden center and put them out after all danger of frost has passed.

Morning glories don't usually require pruning except in fall after frost has killed the foliage. But if the plants start to grow larger than you want and get out of hand, you can prune them back during the growing season without harm.