Answer: Bougainvillea won't survive your winter weather but climbining roses will. However they're not evergreen I think Vinca minor would be an interesting plant. It is vining and evergreen and produces either purple or white flowers from spring through fall. Or, consider growing jasmine; these bloom from winter through spring. Favorites include fragrant pinkish white Jasminum polyanthum (zones 7-9, 14-17), pink or violet trumpet vine (Clytostoma callistegioides; zones 8, 9, 14-17). All are very vigorous, growing 10 to 20 feet long or more. Star jasmine (Trachelospermum jasminoides) is yet another evergreen choice, this one with fragrant star shaped flowers.
Best wishes with your new vine!
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