I have taken over an allotment last september, on it is a greenhouse that i have restored, it is about thirty foot long and in it is a grapevine that is rooted outside. i have tried to train the vine along the inside of my greenhouse and it sought of worked. It is now growing rapidly with lots of foliage and some bunches of fruit appearing, i desperatly want to produce some fruit of the vine as i am told it has been grown over the last twenty years and it would be a shame to let it go but it is taking over my greenhouse and i just dont know what to do with it. PLEASE HELP.