what are the white sticky things on trunk of acer : Grows on You

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what are the white sticky things on trunk of acer

6 Jun, 2010

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Stjohntongue

Welcome to GoY. Without a photo we can't be sure but it sounds to me to be a pest. Wooly aphid springs to mind, or possibly scale insect. Or even (Gasp!) bacterial canker.
I hope this helps.

6 Jun, 2010

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