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Sick tree?


By Mcmneil

Somerset, United Kingdom Gb

Can anyone identify this parasite on a maple tree?




Looking through my new book I bought this week 'What's Wrong with My Plant?' by Steven Bradley - it looks like Brown Scale - Parthenolecanium corni, small brown blisters 1 - 6mm on stems and leaves. They suck the sap which gradually weaken the plant. He suggests treating it with the parasitic wasp Metaphycus helvolus, a preditor insect, in midsummer. Hope I'm right.

13 May, 2008


I agree. They are otherwise known as scale insects. They are hard to get rid of, I'm afraid. I had them on my Pyracanthas and in the end got rid of the Pyracanthas!

13 May, 2008

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