I was asked about this tree variety and what the hairy fuzz is that is growing all over it. I though someone in the master gardeners may know.
Would appreciate your help.
Thank you for posting this very interesting question to the Toronto Master Gardeners. It would be helpful to have a picture of the leaves of the tree to help identify it. Would it be possible for you to send that to us?
Our best bet is that the fuzz may be Honey Fungus Mycellium (a kind of mushroom that attacks woody perennials). You can read more about it here: https://www.rhs.org.uk/advice/profile?PID=180
Another thought is that it might be moss (if it were green), but also lichen, algae or slime mold. These organisms will not harm the tree. They can be got rid of if you change the conditions that the tree is growing in, since they thrive when the environment is too wet, and there is not enough light. You can read a bit more about these organisms growing on trees here: https://www.rhs.org.uk/Advice/profile?PID=411
We do hope this helps.