Well, we would be guessing if we were to try to identify this plant. If it is in leaf, why don’t you bring a few leaves to a local nursery and ask them to identify it—at least, to confirm it is grape. (Maybe they’d come out and take a look at it if they are into solving mysteries!) Once that is known, you can plan. Pruning would be a good idea, if it is grape. (Any chance it’s wisteria?? Also, you do not mention it’s having support other then a chain link fence; how high is the vine?? We’re just curious.)
Well, we would be guessing if we were to try to identify this plant. If it is in leaf, why don’t you bring a few leaves to a local nursery and ask them to identify it—at least, to confirm it is grape. (Maybe they’d come out and take a look at it if they are into solving mysteries!) Once that is known, you can plan. Pruning would be a good idea, if it is grape. (Any chance it’s wisteria?? Also, you do not mention it’s having support other then a chain link fence; how high is the vine?? We’re just curious.)