Serissa's trunk issue. Fungi? Mites?

[BlackAtom]

Hi guys! I just got a serissa from a garden centre yesterday. I got a few yellow leaves, which is normal from what I've read because it was just relocated. I used a toothpick to make sure the soil isn't too dry or too moist. Even got a humidifier next to it because my house isn't humid enough. However, I noticed on the tree bark there are these black dots which at first I thought was dirt, isn't dirt. It's just dark little holes. Is this normal? If not is there anyway I can help it heal?

Based on your expertise, do you think it could be caused by mites or fungus? Thank you in advance!

 

[Brian Van Fleet]

Mild or mildew developing on that dead section of trunk. A little diluted bleach on a cotton ball should get rid of it, but don’t go overboard.

 

[sorce]

Welcome to Crazy!

Sorce

 

[BlackAtom]

Mild or mildew developing on that dead section of trunk. A little diluted bleach on a cotton ball should get rid of it, but don’t go overboard.

Thank you so much Brian!!

 

[BlackAtom]

Welcome to Crazy!

Sorce

Thanks for having me.