Green grapes skins going dark?

Discussion in 'Outdoor Gardening in the Pacific Northwest' started by treb001, Jul 31, 2015.

  1. treb001

    treb001 Active Member

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    Location:
    Lake Cowichan B.C Canada
    My green grapes that are usually bright green have starting to have the grapes skins turning somewhat black. What could be the problem?
    Any info would be appreciated.
    Thank you.
    Bert
     

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  2. Georgia Strait

    Georgia Strait Generous Contributor

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    what type of grapes do you have?

    have you tasted one of the darker ones?
     
  3. treb001

    treb001 Active Member

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    I think they are Riseling. Grapes are still sour. Usually do not ripen till the middle of oct.
     
  4. Georgia Strait

    Georgia Strait Generous Contributor

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    here's an interesting article
    https://en.wikipedia.org/wiki/Ripeness_in_viticulture

    At this time, I am not able to ask my viticultural neighbors in Okanagan what it might be. Maybe contact Okanagan College in |Penticton or the Research Station near you (Sidney - is it still there?) - or the one in Summerland BC (Pacific Agri Research - I think that's what it is called) http://www.agr.gc.ca/eng/science-an...-research-centre-summerland/?id=1180620561099

    did you personally plant the vine(s)?
    How old are they?

    I would not be surprised if the extreme jolt of heat at Coastal BC in June and earlier July promoted some responses in your vines-fruit that you may not usually see

    (i know Lake Cowichan does get very hot, as does Duncan etc - but a few weeks ago was extreme, would you agree?)
     
    Last edited: Aug 8, 2015
  5. chimera

    chimera Well-Known Member 10 Years

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  6. treb001

    treb001 Active Member

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    Hi,
    We had 4 weeks of hot (40) weather and steady around 30+ since then. I planted the grapes some 6 years ago.
    I will access the links you sent.
    Thanks very much for the info.
     
  7. treb001

    treb001 Active Member

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    Location:
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    Hi.
    Thanks for the suggestion. Have checked if it was rot. Its not.
    Cheers,
    Bert
     

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