Lemon Balm issue

[MichaelJMS]

Hello. So I have a lemon balm tree that has been withering the last few days and only today I noticed some strange brown and white bumps on the limbs. Any idea what this is?

 

[NatalieW]

it looks like a root rot or some other type of rotting problem ... have you been overwatering it? ... pull it out and let the area dry out ... if the soil has a lot of mold in it, you can scoop it out and get rid of it, replace with fresh garden soil.