Answer: There are very few flowering vines that will thrive in full shade. Evergreen Clematis and climbing Hydrangea may be your only choices because they adapt to most growing conditions in the Pacific Northwest. You might try Fiveleaf Akebia (Akebia quinata). It's a twining vine growing up to 30' with small purple flowers with a light, fruity scent. It has attractive foliage.
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