Treasuresbylee - Dusk Morning Glory - 25 Heirloom Flower Seeds 25 Freshly Harvested Seeds Beautiful Packaging, Instructions on backside. Morning glory vine forms twining vines with bell-shaped flowers, and its varieties have also become intertwined botanically under the name "morning glory." Because they're quick, easy, and dependably colorful, morning glory is the most popular annual vine. The vines grow quickly to 10 feet or more only two months after seeds sprout. The leaves are heart-shaped, and the flowers are normally open from dawn to midmorning, but new varieties will stay open longer, especially on overcast days.