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Zones A1-A3, 1-45, H1, H2
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Full
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Moderate

Ipomoea purpurea

Common Morning Glory
Convolvulaceae
Annuals, Vines

IPOMOEA

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 purpurea

This annual grows to 6–9 ft. tall, usually with blue, purple, or white flowers 1 1/2–2 1/2 in. wide. ‘Grandpa Otts’ has deep purple flowers with a wine-shaped central star. The white flowers of the Carnival (or Carnival of Venice) strain are marked with pink or purple radial stripes.

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