Aglaonema root rot

Persistent wilt in wet soil, soft cane bases, and roots that collapse justify unpotting. A yellow leaf by itself does not establish rot.

Trim and replant

Remove mushy roots with clean tools and discard decomposed mix. Use a clean draining pot matched to the roots left, with fresh potting mix. Keep the cane at its original depth and moisten the mix evenly, draining all runoff.

A soft cane base may require taking a sound top cutting above the damage. Keep recovering roots warm in indirect light and let the upper mix dry between waterings. Wear gloves when cutting because the sap can irritate skin and eyes.