Grapes on a deck
Is it possible for an appropriately zoned grape to survive in a container that would be sitting on a deck? I would like to grow the vines up onto an old gazebo structure that no longer has a tent type cover, to provide summer shade to a portion of my deck. I am concerned that the roots would be subjected to colder temps than if they were planted at ground level and insulated by snow. I am zone 3 and have ordered a couple of Beta and King of the North grape vines. If these are not the best choices, are there better varieties for my raised deck?