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Birch Problem?

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Hi,

Could anybody tell me what problem on this birch tree? Thanks. Chris

 

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  • Busy-LizzieBusy-Lizzie Posts: 18,473

    The black mass on the tree in the lower picture looks like canker. I think cankers are due to a fungal infection and they have to be cut out and disinfected, but it's not something I've ever done. I hope someone more expert than me answers.

    Dordogne and Norfolk
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