37+ Why Peace Lily Leaves Turn Brown. Well, the peace lily flower does not remain one consistent color. The peace lily (spathiphyllum) is one of the most popular houseplants.
To state the obvious, a peace lily with yellow leaves is a problem. The reality is that, while both these problems cause browning, they usually affect a peace lily's leaves, not its blooms. Place this plant in low to moderate.
Peace lily pests and diseases:
The leaves of a peace lily houseplant can become brown or yellow and possibly black as well, but not always for the same reasons. Veronica on may 09, 2018 They contain oxalates which can irritate an animal's mouth and stomach. To state the obvious, a peace lily with yellow leaves is a problem.