Those little green things are gonna grow up to be grapes.. I had a Concord vine , but it got killed during a backyard remodeling.. it wasn't in a good place anyway... soon I hope to have a proper arbor, and then I will get another.. watchout for japanese beetles. study up on pruning grapes.. left to their own devices the vines can run 20-25 feet in both directions if the have a fence or tree to support them.. however bigger is not better.. the longer the vines grow the smaller and fewer the grapes unless you irrigate and fertilize heavy.