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Thread: grapevine woes

  1. #1
    woodfettler is offline Germinator
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    Default grapevine woes

    I have had a black hamburg grapevine in a cold greenhouse for four years now and have yet to see any fruit on it . I get plenty of growth but no flowers or fruit. could anyone shed any light on my particular problem ? any suggestions greatly appreciated. cheers

  2. #2
    nick the grief's Avatar
    nick the grief is offline Gardening Guru
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    I can only assume it;s the way you are pruning it Woodfettler as Hamburgh is usually OK. Was it a cutting when you got it or was it a plant you bought?

    The usual practice is to plant it outside & then train it into the greenhouse. Have you done this?

    Welcome to the vine anyway.
    ntg
    Never be afraid to try something new.
    Remember that a lone amateur built the Ark.
    A large group of professionals built the Titanic


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  3. #3
    Mrs Dobby's Avatar
    Mrs Dobby is offline Early Fruiter
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    I know one of the other allotment holders on our plot has a vine, I'm sure he said it was a Hamburg when he gave us some wonderful black grapes a couple of months ago! I know he has his growing outside the greenhouse, then entering through a window and trailing right along his roof space (its a 16' long greenhouse!). When we asked him about why it was growing outside he said the vine needed the frost in order to properly fruit, so if yours is inside the greenhouse it may be that they arent getting cold enough, perhaps leaving the dfoors open if there's a frost predicted may help (tho only if you havent anything in there that would be killed by the frost). Hope this is of some help!
    Blessings
    Suzanne (aka Mrs Dobby)

    'Garden naked - get some colour in your cheeks'!

    The Dobby's Pumpkin Patch - an Allotment & Beekeeping blogspot!
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  4. #4
    woodfettler is offline Germinator
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    Quote Originally Posted by nick the grief View Post
    I can only assume it;s the way you are pruning it Woodfettler as Hamburgh is usually OK. Was it a cutting when you got it or was it a plant you bought?

    The usual practice is to plant it outside & then train it into the greenhouse. Have you done this?

    Welcome to the vine anyway.
    thanks very much for the warm welcome Nick ,i bought the plant at the local garden centre ,it would seem from your reply (and another ) it needs to be planted outside ,it is planted in the border of an unheated greenhouse and frost does get it a bit . I have followed rhs pruning instuctions to the letter but still no joy maybe its time to try a different variety thanks again
    mike

  5. #5
    Mrs Dobby's Avatar
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    Oh, sorry Woodfettler, I forgot, a warm welcome to the vine too!
    Blessings
    Suzanne (aka Mrs Dobby)

    'Garden naked - get some colour in your cheeks'!

    The Dobby's Pumpkin Patch - an Allotment & Beekeeping blogspot!
    Last updated 16th April - Video intro to our very messy allotment!
    Dobby's Dog's - a Doggy Blog of pics n posts - RIP Bella gone but never forgotten xx
    On Dark Ravens Wing - a pagan blog of musings and experiences

  6. #6
    woodfettler is offline Germinator
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    Quote Originally Posted by Mrs Dobby View Post
    I know one of the other allotment holders on our plot has a vine, I'm sure he said it was a Hamburg when he gave us some wonderful black grapes a couple of months ago! I know he has his growing outside the greenhouse, then entering through a window and trailing right along his roof space (its a 16' long greenhouse!). When we asked him about why it was growing outside he said the vine needed the frost in order to properly fruit, so if yours is inside the greenhouse it may be that they arent getting cold enough, perhaps leaving the dfoors open if there's a frost predicted may help (tho only if you havent anything in there that would be killed by the frost). Hope this is of some help!
    thanks for the tips Mrs D have tried all your suggestions to no avail !I think the compost bin is calling and a new vine needed which is a shame as this one is trained all round my greenhouse . oh well thanks anyway Mike

  7. #7
    woodfettler is offline Germinator
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    Quote Originally Posted by woodfettler View Post
    thanks for the tips Mrs D have tried all your suggestions to no avail !I think the compost bin is calling and a new vine needed which is a shame as this one is trained all round my greenhouse . oh well thanks anyway Mike
    thanks for the welcome

  8. #8
    nick the grief's Avatar
    nick the grief is offline Gardening Guru
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    Can't help much more then Mike. The usuall practice is to plant the roots outside & have the vine growing inside.

    WHat you can do is replace a pane of glass with either pastic or wood & cut a hole in it then use some of the pipe insulation to line the hole & stop the bark getting cut.

    grapevine woes-glass-800.jpg

    this keeps the roots cool & moist but the fruits (the bit your interested in) nice & warm.

    It could be that the flowers aren't getting pollentated so the fruits don't set - no grapes. So when the flowers are around you can either open the vents & doors & try and encourage insects in to do it for you or get some plain maggots from the loccal fishing takle shop & let them hatsh in the greenhouse as these make efficient pollenators & don't sting
    ntg
    Never be afraid to try something new.
    Remember that a lone amateur built the Ark.
    A large group of professionals built the Titanic


    ==================================================

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