Florida Gardening: Please help- Cassia, 2 by Nefitara

Nefitara wrote:
Hello, I need help please. Does anyone know why my cassia tree has this mold/fungus on it? Today I was trimming it when I noticed dark tunnels inside the branches as well. When I cut into it again I noticed an ant type insect living inside the branch and eggs in there too. As you can see in the photo, the branches look like straws i never noticed this before. This is an off shoot of the mother that had died. The mother tree just died out in about 2-3 yrs, I knew back then that something killed it, but I didn't know what it was. Now I find this and these insects and I'm assuming that, that is the reason why the mother tree died? Does anyone know about these trees.....please help!