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Strange things on my acer's bark


By Liz10

United Kingdom Gb

My acer has recently developed sticky adhesions on the bark. They are brown, about 2-3 ml across, oval-ish shaped, like miniature wood lice. They are stuck to the tree with white sticky substance in cells. What are they, what do they do, and what should I do?



Sounds like scale insect - cotton buds dipped in methylated spirits and applied to each one, otherwise, think Provado might make a treatment spray, not sure.

1 Jun, 2010


Sound like mussel scale. These are apjhid like sap sucking insects. Use a horticultural soap and scrub them off without damaging the bark of the tree.

1 Jun, 2010



1 Jun, 2010


Thanks folks. I think I have hours of work ahead of me as there is a lot of it. Really appreciate speedy responses and advice.

1 Jun, 2010

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