Pest infestation on current bush

Discussion in 'Outdoor Gardening in the Pacific Northwest' started by pworthin, Sep 18, 2012.

  1. pworthin

    pworthin Member

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    Hi everyone, I am new to this forum and hoping someone with superior expertise to me can advise me. I have a red currant bush which is greatly afflicted. Although the bush, which is three years old, is growing vigorously something is attacking about 3/4 of the leaves, and perhaps as a result of this I'm not getting much fruit crop. I attach a picture of an afflicted leaf. Three questions:
    - I'm guessing it's some kind of insect pest inside the leaves. Is this correct?
    - Is there anything I can do, preferably that doesn't involve some noxious chemical. Last year I took off all the afflicted leaves and burnt them, but the problem came back this year.
    - It's planted next to my grape vines and some gooseberry bushes. Is there a risk that whatever it is, attacks these plants as well (in which case should I just rip it up and start anew?)

    Grateful for any guidance
    PEter
     

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  2. Sundrop

    Sundrop Well-Known Member

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    Looks like blisters. Caused by red currant blister aphid, Cryptomyzus ribis.
     
  3. saltcedar

    saltcedar Rising Contributor 10 Years

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  4. pworthin

    pworthin Member

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    Perhaps. I dunno. Any suggestions for how to treat it without resorting to some horrendous chemical?
     
  5. saltcedar

    saltcedar Rising Contributor 10 Years

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    Hand picking infested leaves is the only non-chemical treatment I know of.
    In my experience that leaves a defoliated plant, which is not what I want.
     
  6. pworthin

    pworthin Member

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    Thank you! I have defoliated it. We'll see what happens next year.
     

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