White fungus on trunk/nebari

[Noulinator]

Hello!
My japanese maple has slowly started to get some white looking fungus stuff around the nebari/trunk.
How do I get rid of it? Any ideas what it is?

Started after i began fertilizing with biogold.

 

[minkes]

I think it is probably "stone" from hard tap water. I have also this problem with hard water and some of my trees look similar.

 

[Noulinator]

I think it is probably "stone" from hard tap water. I have also this problem with hard water and some of my trees look similar.

I only used rain water and the tree didnt have this before I got it.

 

[NeedlesAndLeaves]

Looks a bit like lichen which is a fungus. But not sure.

 

[Unagi]

Is there a way to treat that? I think my Chinese elm's root has a similar thing.

 

[NeedlesAndLeaves]

Again I am not sure that it is lichen but if it is:

How to Treat Lichen on Trees

Learn how to treat lichen on trees, its benefits, and safe removal. If your trees are declining, we can help with a free consultation. Contact us now.

stroberttree.com

 

[Unagi]

Hm... true. Unless there are different types of lichen or the picture on your link is zoomed in, I don't think what the OP or me have is lichen. I think I have seen lichens in the forrest, and those were different (e.g. bigger).

 

[pandacular]

If you want to clean it, I would start with something light. Dilute vinegar and a toothbrush should get it off.

 

[penumbra]

Looks like a normal lichen growth pattern in second picture. I love it when I get lichen on my bonsai.