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black spot on grape leaves

Posted: Thu Mar 16, 2017 11:25 pm
by jaroti
what is happening to these grape leaves?, can I still treat them?

Re: black spot on grape leaves

Posted: Sat Mar 18, 2017 9:20 am
by !potatoes!
probably some kind of mildew/fungal issue (grapes get them a lot)...but it doesn't look bad at all. not sure about treatment, but there probably is something you can do.

Re: black spot on grape leaves

Posted: Sat Mar 18, 2017 9:33 am
by JONA
Probably the safest so near to harvest would be sodium bicarbonate...baking powder.... it's quite effective as a fungicide.