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Rowan Tree

I noticed this white stuff on the trunk of my Rowan tree this morning. Is it anything to worry about and how do I treat it (if needed)


  • LiriodendronLiriodendron Scariff, County Clare, IrelandPosts: 7,754
    Looking at my 3 rowan trees confirms that this is perfectly normal - they just have patterned bark when mature.   :)

    Make sure the green ties for your lights aren't cutting into the bark though.  They look a bit tight...
    "The one who plants trees, knowing that he will never sit in their shade, has at least started to understand the meaning of life."  Rabindranath Tagore
  • Paul B3Paul B3 Posts: 2,984
    I may be 'well off the mark' here , but to me (can't magnify enough) , those growths resemble Barnacle Lichen .
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