Sooty Bark Disease concern?

Discussion in 'Maples' started by Connor Sullivan, Aug 29, 2022.

  1. Connor Sullivan

    Connor Sullivan Active Member

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    Location:
    Eugene, Oregon
    I recently found a area of concern on my Osakazuki.

    My friend is a urban forester for the city of Olympia WA and texted me it might be Sooty Bark Disease?

    Looks like there have been infections in Acers up in the Seattle area and it could be spreading around the Pacific Northwest. The Sooty Bark Disease might not be 300 miles south yet... hopefully.

    What are your thoughts on this? The effected branch is showing a late summer flush of new growth, which seems like a good sign.

    IMG_1660.jpg IMG_1662.jpg
     
  2. 0soyoung

    0soyoung Rising Contributor

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    I had not heard of this before, but it isn't new to our region, nor to Europe. So, I have my doubts.
    Spores can cause some serious human respiratory issues:

    Maple (Acer spp.)-Sooty Bark Disease
     
  3. Connor Sullivan

    Connor Sullivan Active Member

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    Location:
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    I found this in my fathers Mayday maple…

    what should I do?

    EAAF05ED-02CB-4A57-B796-8EC5D7A7E7A7.jpeg
     
  4. emery

    emery Renowned Contributor Maple Society 10 Years

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    Hi, I'm sorry to say the maple looks really poorly, the color of the bark above the lesion indicates sap flow is very poor.

    It has a bacterial infection, I can't say what kind. Doesn't look like pseudomonas.

    The only thing to do is spray with copper. I'd do it every day for a couple of weeks, to see if you can knock it back. I don't think it will survive surgery, because of the state of the bark generally.

    Sorry. -E

    P.S. I followed the youtube link, and really enjoyed your work, assuming that's you.
     
  5. opusoculi

    opusoculi Rising Contributor

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    Information for french gardeners. Forêts - Maladie de la suie de l'érable
    sooty-bark-maple = Crystostroma corticale = maladie de la suie de l’érable (in french).
    La maladie est présente dans le centre-ouest de la France, quelques cas sur Acer cycomore jusqu’à Poitiers environ.
    Pas de panique .
     
    emery, AlainK and 0soyoung like this.
  6. Ron B

    Ron B Paragon of Plants 10 Years

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