Answer: This plant grows and clings by root hairs and could damage a wall that was not sound to begin with. A mature vine will be heavy and could potentially pull stucco off of a building as well. This would be true of any clinging vine.
It is always risky to grow a plant above ground in a container, so the best bet would be to sink the container in the ground for the winter or otherwise insulate it so that the roots are protected not only from cold but also from temperature swings.
This plant might not be the most satisfying container candidate as it takes several years to become established and begin to grow and several years or longer to begin blooming. It would be difficult to renew the soil without disturbing the plant and possibly causing even more than the normal wait.
Q&A Library Searching Tips