Ask an arborist for tree advice

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tree trunk rust

Posted by Veronica , Aug 11,2005,17:30       Forum

Hi there

I have a small crab apple tree in my garden in Scotland,UK. The bark on the trunk has become coated in a brown/rust colour, and it feels a little spongy. Any idea what this is and how to treat it? The foliage and flowers seem to be ok.


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