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  1. #1
    JayTee is offline Germinator
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    Default Greenhouse Grapes

    Can anyone help, for the last 7-8 I've been growing Black Hamburg grapes in my tunnel and greenhouse, these were cuttings taken from a friends vine, the roots are both planted inside, the tunnel and greenhouse are around 10 mtrs apart, both produce a large crop but the ones in the greenhouse have never ripened and always remain bitter where as the ones in the tunnel are always lovely and sweet, any ideas

  2. #2
    nickdub is offline Early Fruiter
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    does the PT get more sun than the GH ?

  3. #3
    JayTee is offline Germinator
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    Both get full sun all day Nic

  4. #4
    bario1's Avatar
    bario1 is offline Work in progress...
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    Do vines prefer a more humid environment maybe?
    He-Pep!

  5. #5
    nickdub is offline Early Fruiter
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    Could it be a disease of some kind affecting one vine ?

  6. #6
    JayTee is offline Germinator
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    The vine looks healthy to me, if I could figure out how to add photos I'd post a shot of the vine

  7. #7
    Scarlet's Avatar
    Scarlet is offline O'Hara
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    I’m sorry but you don’t have enough posts under your belt yet to upload photos....keep talking just over half a dozen to go

    I don’t know much about grapes but I remember reading a blog sometime ago and it may explain ( or confuse things )

    Due to genetic instability, most of the older grape varieties have a tendency to mutate, adjusting to their location, climate, terrain, etc even from a clone/cutting from the same plant. Each plant has different tastes.
    Taken from this blog:
    http://arrowheadwine.blogspot.com/20...osses.html?m=1

    It’s really interesting and worth a read.
    Last edited by Scarlet; 12-09-2018 at 04:27 PM.

  8. #8
    nickdub is offline Early Fruiter
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    Quote Originally Posted by JayTee View Post
    The vine looks healthy to me, if I could figure out how to add photos I'd post a shot of the vine
    I'm out of ideas on what might be causing the problem, but if I was in your shoes I think I'd take a few cuttings from the good vine over winter, with a view to replacing the non-performing one if it doesn't buck up next year.

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