In this genus, ornamentals and edibles abound, from edible sweet potatoes (see Sweet Potato) to trellis-climbing morning glories and the sweet potato vines that fill out container plants so well.
Most have hard seeds; to encourage faster sprouting, nick the coating or soak overnight in water before planting. For annual display, sow seeds in place after frost danger is past; or, for an earlier start, sow seeds indoors, then set out plants 6–8 in. apart. Use morning glory vines on fence or trellis or as groundcover. Or grow in containers; provide stakes or a wire cylinder for support, or let the plant cascade. For cut flowers, pick stems with buds in various stages of development and place in a deep vase; buds will open on consecutive days. The morning glories listed here do not include the weedy plant known as wild morning glory or bindweed (Convolvulus arvensis). These are similar only in appearance.Ipomoea quamoclit
This annual grows to 20 ft., with 2 1/2–4-in.-long leaves finely divided into slender threads. Summer flowers are 1 1/2-in.-long tubes that flare at the mouth into a five-pointed star; they are usually scarlet, rarely white. Attract birds.
Two kinds of mustard are popular in American gardens, both derived from plants native to the Mediterra...
Grows to 5 ft. tall and 2 ft. wide. Intensely fragrant, long, tubular white flowers are borne in tiers...
Western Mediterranean native. Grows to 1–1 1/2 ft. tall and 9 in. wide. Its delicate fernlike fo...