Exposure to direct light can cause the leaves to turn yellow; showing a burnt appearance. Water, whether too much or too little, can cause peace lilies to wilt and the leaf edges to turn yellow or brown. Clean the drainage holes and drain the excess water, then back off the watering until the plant is slightly dry.
Similarly, you may ask, why are the flowers on my peace lily turning brown?
Blossoms last longest before turning brown on a peace lily that gets excellent care. A peace lily usually requires watering about once a week. Allow the plant to dry out a little before watering, so its leaves begin to droop, then stand it in room temperature water until the surface is moist.
Do peace lily plants clean the air?
Plant of the Month: Peace Lily (Spathiphyllum) A long-time favorite among house plant enthusiasts, research conducted by NASA found the Peace Lily to be one of the top indoor plants for cleaning air. This tropical plant breaks down and neutralizes toxic gases like benzene, formaldehyde, and carbon monoxide.