The short answer
Root rot is likely when roots are soft, collapsing, or shedding their outer tissue, often alongside persistently wet soil and wilting. Root color alone is not enough to diagnose it.
Why this happens
Healthy roots are generally firm; some species naturally have darker roots. Waterlogged soil reduces oxygen around the roots and creates conditions favorable to decay organisms.
What to do
- Gently slide the plant out of its pot.
- Inspect firmness, odor, and the condition of the root surface.
- Remove clearly rotten roots with clean tools and discard saturated old mix.
- Repot in fresh, airy mix and a draining pot suited to the remaining root mass.
Keep in mind
A severely affected plant may not recover. Keep suspect plants separate and clean tools between plants.