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Produce => Under Glass => Topic started by: petengade on June 09, 2011, 10:07:51

Title: powdery mildew on grapes
Post by: petengade on June 09, 2011, 10:07:51

When thinning the grapes noticed powdery mildew, how do I treat it please? did a google and saw ''spray with watered down milk'' any other tips? Thanks in anticipation.

Title: Re: powdery mildew on grapes
Post by: Old bird on June 09, 2011, 11:53:58

I use  baking powder  about a teaspoonful in 1/2 litre water.  I use it to spray  indoor courgettes which get mildew on their leaves cucumbers and aubergines also to stop red spider mite which it is also very successful in getting rid of!

good luck

O B

Title: Re: powdery mildew on grapes
Post by: petengade on June 10, 2011, 09:25:10

Thanks Oldbird will try that

Title: Re: powdery mildew on grapes
Post by: Vinlander on June 10, 2011, 16:56:25

Quote from: Old bird on June 09, 2011, 11:53:58

I use  baking powder  about a teaspoonful in 1/2 litre water.  I use it to spray  indoor courgettes which get mildew on their leaves cucumbers and aubergines also to stop red spider mite which it is also very successful in getting rid of!

good luck

O B

Does it work better than bicarb (as a foaming cleanser  ;))?

If so it might be worth making up with Potassium bicarb (which is supposed to be better).

I only get mildew on the actual grapes of King's Ruby (the only variety I have without much labrusca genetics), and I find propping the bunch out away from any surface (including their own leaves) helps a lot.

Cheers.

Title: Re: powdery mildew on grapes
Post by: petengade on June 10, 2011, 17:41:07

All noted, many thanks