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powdery mildew on Black Hamburgh grapevine in greenhouse

prune

By Prune

how to treat it organic way?




Answers

 

I dont think there is a way of completely getting rid of it! Its down to warm wet weather and only way is good hygiene of burning or binning all leaves when they start to fall. Copper sulphate rings abell but not sure if its organic? More of a prevention ish thatn a cure. Garden centres stock it, but ask about its organic-ness or other products

23 Aug, 2009

 

Thanks Nickyo8
prune

24 Aug, 2009

 

Copper Sulphate is no longer available is there anything else?
prune

25 Aug, 2009

How do I say thanks?

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