Advice on established grape vines please

jenfa

I have 4 established grape plants in my greenhouse (planted by previous owners many years ago) we don't use for wine but find we can normally eat some of the grapes as they are sweet enough.

I have researched, books, you tube for advice and am now stuck.

I understand I should cut back in the winter to the leader, and that when grapes grow cut back to a leaf after the bunch to enable energy to go into the bunch.

What should I do with the ones that don't produce grapes?

I think one year maybe I cut back too much as one of the plants isn't producing grapes at all.

I have so much greenery it takes over the greenhouse and I'm sure I should be controlling it more.

Any help much appreciated.

andrewf75

How big is your greenhouse?
Grape vines are pretty big so unless its huge I'd probably try and move all but one of them anyway!

jenfa

I'll have to measure it but it is huge at least double standard size and these grape vines have been in a good 20 years so I wouldn't like to try and dig them up I don't think they'd survive that.

realfood

For the ones that are not producing, cut them back to about 3 leaves. You will need to do this several times through the summer.

System

I have a mature vine in my garden and I was told to cut to cut grapeless vines right back so the plant puts the energy in to the developing grape bunches. Also cut back stems which are shading any bunches.

I found that I was cutting them back every couple of weeks last year. Winter I cut it right back (it was huge!)... so this year I probably won't get any grapes, it will be next. .....xx

jenfa

Either age or weather has got to some parts of the grape vines so i am going to have to train some new side leaders, one of the vines is not producing any grapes and had some damaged leaves not sure if it has an infection so took all the leaves off that section and will train a new leader on this one too. It does seem a constant job.