Diagnosis
Diagnose: Pothos Yellow Leaves
Use these observations to decide what to check next.
Start with the changed leaf and the root zone
One aging lower leaf on an otherwise growing vine may need observation. Several declining leaves above wet medium justify checking drainage, while a light pot with a dry root ball may need thorough rewetting. Soft or crisp tissue alone does not settle the cause.
Darkening stems, expanding lesions, or rapid decline call for separation from other plants and further assessment. A clean-looking leaf does not rule out an early root or disease problem.