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Novice gardner here but I have a lovely acer/maple tree in a pot which I have grown from a cutting about 10 years ago. However this year, the leaves are beautiful but the bark at the bottom is covered in a white fungus with some yellow/brown spots on it - it comes off if brushed off but not sure what to do
Linda West Midlands UK



Do you think you could edit your question to add a photo please Linda? It may be nothing to worry about - it could just be lichen, but without a photo we can't really tell.

5 Jun, 2011


Have you repotted recently? It is possible that the trunk is too deeply covered with soil and getting moist - allowing mold (or Lichen as Beattie has said) to grow.

5 Jun, 2011


Sounds like scale insect - there's a lot of it about this year, particularly on Acers. If you've got any methylated spirits, moisten some cotton wool or a soft cloth with it and rub the fluffy deposits and the scales off, making sure you get them all wherever they are. Otherwise, a mild soap and water solution, dip a cloth, wring out and clean off with that, preferably a cloth you can bin afterwards.

5 Jun, 2011

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