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Brown/black bumps on olive tree

I just ordered a new olive tree that is about 5 1/2 feet tall. It appears to be healthy but there are dark brown/black bumps on some sections of the tree and leaves. They are about the size of a pencil eraser, maybe a bit smaller. Can anyone tell me what they are and how to treat them? Thank you!! 



  • mattsmatts Posts: 37

    They look like scale insect to me but wait until someone more experienced than me comes along with a diagnosis.

  • floraliesfloralies Haute-Garonne SW FrancePosts: 1,290

    I would say they are scale insects also. You would have thought the vendor might have seen these before selling it to you! I have got rid of scale insects buy dipping a cotton bud in methylated spirit and rubbing it on the insect - they have a quite a hard coating. 

  • They look like scale insects to me to, if you have just acquired the tree I would get in touch with the vendor and let them know you are not happy with it being sent to you with scale,

    I use cotton buds dipped in meths because the scale as a hard coating there isn’t any point using a spray inscode.

    If you are keeping the tree treat it ASAP as the scale insects are sap suckers so will weaken the tree.

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