Hello... Well, this is gonna seem really weird but, we got a new house here, and there's a grapevine stretching all the way upto the roof (about 20m to 25m or so) and the owners say that it never gave any fruit , and they had it for about 8 years I think... I read a few posts here and they mention something about 'pruning' the vine... Can someone please tell me how exactly to prune the vine? I got a Dorling Kindersley book on herbs too, and there's a section on vines which has grapes, and it mentions there too that excessive pruning is required to cultivate the fruit.. So can anyone help out please? Spring has just started here and the vine is growing new shoots all over, and I'd like to try and prove them wrong about the fruit... .. Any help would be appreciated...

Thankye!!