Why Peace Lily Leaves Lose Color, Turn Brown, and Die

Diagnosing Peace Lily Decline

Peace lilies (Spathiphyllum) lose leaf color and brown due to two main causes:

1. Insufficient Light

They need bright, indirect light—enough to read a paperback without artificial light. No direct sun.

2. Overwatering (Most Likely)

Peace lilies must dry out significantly between waterings. In winter, water every 2–3 weeks. Check soil: top 2 inches should feel dry before watering again.

Recovery Plan

1. Move to a brighter location (north or east window).
2. Cut back watering drastically—let soil dry deeply.
3. Remove brown/yellow leaves at the base.
4. Be patient; improvement is gradual.

Consistent dry-down cycles restore healthy green foliage.