How can I make my grapevine produce edible grapes. The vine fruits but they are very small and bitter.?

The grape vine is positively laden with grapes but they remain small, abot the size of a current. They cannot be eaten and its clear they are not fully developed although when squashed they are juicy.

How can I make my grapevine produce edible grapes. The vine fruits but they are very small and bitter.?
Nothing. You have to wait at least 5 years to get a good crop of grapes. My vine is on it's 3 year and just now producing it's first crop. It will be at least 2 more year before they are worth harvesting.

Good Luck
Reply:Feeding and the bunches need to be thinned. This summer hasn't been great either.



Although the main vine pruning season is autumn to early winter, vines require maintenance pruning in the spring and summer to prevent them getting too crowded. Dessert grapes also benefit from thinning of the fruit to help ensure the remaining grapes are large, sweet and free of pest or disease problems.



Tendrils should be removed as soon as they start to form, as not only will they will sap energy from the vine, but they will also scramble across your training system and entangle with the fruits.



As a general rule, 450g (1lb) of fruit should be allowed per 30cm (1ft) of main lateral, rod or cordon.



On a glasshouse vine grown as multiple cordons, only one bunch of grapes should be allowed to develop on each fruiting lateral branching from the cordons.



Dessert grapes need extra thinning, as individual fruit size, sweetness and quality is particularly important.



The grapes must be thinned by hand, using scissors, to increase the spacing between them. This allows each grape to develop to a good size, and allows sufficient air and light penetration between them to encourage even ripening and discourage problems with fungal diseases.



A primary thinning can be done while the grapes are still tiny, and a secondary thinning can be done, if necessary, once the grapes have increased in size.



The link has photographs and more information.
Reply:It depends on the variety..not all grapes grow very big like the ones that are for eating,maybe you have the type that is used for wine making.
Reply:I have two grape vines %26amp; feed them regularly with horse manure watered in..........luvvly jubbly :-)
Reply:I was told grapes need to be water with a solution of sugar/water? Never grown them so I don't know for sure