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eleni
I have a grapevine in a pot that produces plenty of fruit but just before grapes are ripe they just frizzly up leaving a brown skin.

I was told they did not get enough water so last year watered every day the same thing happened.It is not birds as i put netting over them also.When they are fully formed they never seem to ripen.

Submitted: 03:17PM, 08 Apr 2010
Answer: Dear Eleni,

Grape vines can be proned to fungal attack, some of which are Powdery Mildew, Downy Mildew, Botrytis – Grey Mould. Each of these diseases will exhibit different symptoms and needs to be controlled with the appropriate fungicide and/or improving the situatin in which the vine is growing. Anti Rot Phosacid Fungicide will control Downy Mildew. It is a foliar spray and needs to be sprayed at the first signs of disease.

To start with you will need to dispose of the infected fruit. Organise pruning and trellising so that the vine receives an adequate amount of sunshine and air circulation. I am not sure of how old the vine is and how long it has been in its existing pot. Keep the plant as healthy as possible by fertilising regularly and giving the vine adequate water during the growing season.

Answered: 10:39AM, 19 Apr 2010

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