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Eucalyptus leaf spots

Hi, I’ve noticed some spots have appeared on my eucalyptus. It’s planted in a semi shady area. Lots of new growth which looks healthy.

Does anyone know what this could be and how to treat it?

Thank you


  • Pete.8Pete.8 Posts: 10,933
    They look as if they may be scale insects - difficult to see on the pic - brave ones too to try and tackle a eucalyptus!
    Are they like tiny limpets? and if so, see if there's something like cotton wool underneath the shell. If so then it's scale insect.
    To be honest I wouldn't worry too much, the oils in the leaves deter most bugs and I doubt whatever it is will have much effect.
    Although evergreen, they do drop older leaves in the summer and you may just have found a few older leaves that weren't in the best of health so some bugs took advantage.
    Mine grew to over 100ft over 20ish years - just sayin 😊

    Billericay - Essex

    Knowledge is knowing that a tomato is a fruit.
    Wisdom is not putting it in a fruit salad.
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