I have one acre of Brianna and like Grapeman says they grow fast. They can be very labor intensive to prune in the spring, however the wine is excellent. I am in my 5th year with them. Last year we harvested 6 ton from that acre, hard to believe, but they grow like a wild weed. The wine has a wonderful aroma and is semi sweet with a pine apple nose. I sold some of the juice to Julie and Steve but have yet to hear how theirs turned out. I have back sweeten with sugar and also have had great success back sweeten with the juice. All my vines came from double A in New York