Roots Dying

Question

I have a lilac tree that is rotting from the roots.the branche turns black and falls off

Answer 1

In many cases, root rot means the end of the plant, depending on the size and the extent of the problem. If it's severe, you may want to take cuttings from your lilac.

Here are links to two articles that will help:

https://www.gardeningknowhow.com/plant-problems/disease/root-rot-in-garden-plants.htm
https://www.gardeningknowhow.com/ornamental/shrubs/lilac/growing-lilac-cuttings.htm