Japanese maple leaf desiccation.

Discussion in 'Maples' started by directorrod, Aug 16, 2018.

  1. directorrod

    directorrod Active Member

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    Location:
    Rockton, Illinois, USA. Zone 5
    There IS clearly discoloration on the wood of this branch. Note about 85% of the circumference on left side. Only a small area on the side with the green bark isn't showing it yet. The branch I removed has no visible signs of disease.
     
  2. 0soyoung

    0soyoung Well-Known Member

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    Location:
    Anacortes, WA
    I don't think so.

    This is exactly what happens when the cambium dies on one side of the stem because of desiccation. I think this was exposed to sun/wind that, with draught stress, killed the cambium on that side of the stem. "Classically" this happens in winter when roots are in frozen ground.
     
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  3. AlainK

    AlainK Generous Contributor Forums Moderator Maple Society 10 Years

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    Location:
    nr Orléans, France (E.U.)
    Bonsoir,

    Thanks for keeping me on the bright side of a disaster ;°)

    It's true that all the affected parts of the trunk and branches were facing South/South-west, that is the hottest hours of the day. Again, several weeks above 30° C, some days 36°C, and no rain for weeks.
     
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