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Good morning
A bottom pane of glass has broken in my greenhouse and I was wondering whether this would be an opportunity to grow a grapevine,
I was thinking of planting the vine outside the greenhouse and training through the broken pane so that the fruit could ripen inside the greenhouse. Is this a good idea or should I just replace the glass ? Any advise please as always wanted to grow grapes.
Many thanks
Andrea

It is very do-able and provided you pick 'indoor variety' (that is suited best) you should do well
One word of warning....you do need to keep up with pruning the grape..or it will take over the GH and turn it into 'indoor jungle'.
I've looked after grapes that grown even in 6 x 8 size GH (just one per GH) and they were fine and there was still room for some toms and lettuce too!

Many thanks 'goodlife' that is the answer I was hoping for  thanks for the advice

andrea,
As goodlife suggests, go for it!
It will be interesting if you choose a white grape which should do very well. I am trying a red desert variety outside and it has struggled
through the harsh winter and not put on much growth in the fabulous summer. Don't want to move into the GH as there are reasons that goodlife has suggested. Struggle on!

It is a good idea. I have about 30 bunches of grapes ripening in my greenhouse. Have a look at this page for how to plan greenhouse to accommodate a grape :-http://www.growyourown.info/page74.html