I have concord. they are doing well in our yard. I have a cheap-as- all -get-out arch that I bought from Family Dollar. I thought it would blow down with a sneeze, but figured I'd give it a try. I have been surprised to find that the grapes grew up it and are doing well with that. And now, for all intents and purposes, my grapes are holding up the arch, lol. they are geting plenty sun where hey are, although I could trim back some neighboring trees to get better sun.