By Erik
Lancashire,
United Kingdom 
Hi once again gardeners ,my 12 month old grape vine growing in my polly t has made a lot of growth ,with only a few bunches of grapes ,so much growth that it is shading a large part of the tunnel ,the question is can I trim it back now without damaging the plant ,
20 Jul, 2016
Answers
Yes but only lightly it seems to have taken over on side of the tunnel I've had to lightly trim it so I can get some light in I will take some leaves off and see how we go from there ,thanks for the advice moon grow ,
20 Jul, 2016
Have a look at the RHS advice
https://www.rhs.org.uk/advice/profile?pid=284
20 Jul, 2016
Will do thanks again
20 Jul, 2016
You could remove some of the leaves but the time to prune a grape vine is in mid winter when the sap is down otherwise it will bleed badly. Did you prune last winter?
20 Jul, 2016