Plumeria Root Rot?

[Hammer]

I have a plumeria, pictured, that appears to be stuggling off and on with some sort of issue. I think it might be some kind of root rot that doesn't allow the plant to take moisture in adequate amounts.

The branches are withering and constricting, pictured in the first photo. The leaves, earlier this year, became deformed. You can see them in the second photo. The leaves formed later in the summer appear normal.

About a week ago I doused the roots with hydrogen peroxide.

Just curious if anyone knows what might be wrong and has a solution.

Thanks in advance.

[Hammer]

First and second photos got switched by the forum upload tool. Apologies for any confusion.

[kahili]

If you really like this plumeria, and there is a stem that is turgid/viable, I would take it as a cutting and start again. If the picture of the stem is the main stem and not a side stem, then the plant is going to die-I don't think you can bring it back. If its a side stem only-then cut it off below the rotting so it doesn't spread to the rest of the plant. Pouring hydrogen peroxide into the pot isn't going to rid it of a root disease. Using hydrogen peroxide only works when it comes into direct contact with the spores-so you would have to take the plant out of the dirt, wash the roots and then dip it into the hyrogen peroxide.

Plumerias need really good drainage (I add extra perlite to my mix) and to grown on the dry side. Good luck, I hope you can save at least a cutting.