Answer: It may be hard to find a perennial flowering vine that survives in your zone, but some suggestions are:
Actinidia arguta - hardy kiwi
Celastrus scandens - American bittersweet
Vitis sp. - grape
Some annual vines you might have luck with are Asarina sp., Cobaea scandens or cup-and-saucer vine, and Dolichos lablab or Hyacinth Bean, sweet pea or scarlet runner bean.
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