This is my second year with a vine that is probably 5 years old. Last year it produced many clusters of seedless, sweet table grapes. It was pruned back to 3 or 4 branches about 3 or 4 feet long in December / January and now has grown back with a vengence to at least as long, dense and healthy looking as last year. Trouble is I thought by now we would have many small green clusters but only have one...no others have developed...thus we'll not have a crop this year. Once again the vine otherwise looks great. Does anyone have any ideas of what could have happened...and hopefully what I can do to have a crop next year if not this? Thanks for any help anyone can provide!