Morning glories are splendid for enhancing fences or for covering up eyesores. They will rapidly cover fences, arches, and trellises or can be made into their own garden feature with stakes and twine, They're just as effective as trailers from hanging baskets and window boxes. Flowers are white, blue, pink, purple, red and multicolored. Because they're quick, easy, and dependably colorful, morning glory is the most popular annual vine.