I have two vines that I have picked 23 gallons off of. They are still loaded but almost all are over-ripe. They could still be used for wine or jelly but would be hard to haul. They are soft and I think they would mash under their own weight. Mine started coming off the last week of August. If you decide to put in vines, try to plant them a good ways from the house. If you can't get the majority of them picked, you will have a gnat problem.