i have a grape vine that started from seed it is over 5 year old and does not produce any grapes it is 20 feet from another grape vine that has produced for over 40 years. is there male only grape vines
Grapes grown from seed are most likely going to resemble wild grapes, especially if it's a Concord type. It won't be a male only; you just can't predict what you're going to get. Growing fruits from seed is generally a futile exercise.