Answer: Trumpet creeper is a native American vine that blooms in early summer on current season growth and produces clusters of funnel-shaped orange flowers, three inches long with the five petal lobes out-turned at the ends of finger-sized tubes.
Cypress vine and cardinal vine are closely related members of the morning glory family. They both have outstanding crimson flowers which are attractive to hummingbirds. The cypress vine is Ipomoea quamoclit and has very delicate fern like foliage. It can grow ten feet or more in height and has delicate star shaped blossoms. It does best in full sun to partial shade. Cardinal vine, Ipomoea x multifida has a slightly larger, more funnel shaped flower, almost like a miniature morning glory but in bright red, it has a wider leaf blade than the cypress vine. It will also grow at least 10 feet tall. It does best in full sun.
Bittersweet and Carolina Jessamine are also good choice for your gardening region. Any of these suggestions will provide lots of summertime color for your arbor.
Best wishes with your garden!
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