It’s not random.

The Spathiphyllum is forgiving, but it signals stress fast. Brown patches and crunchy tips are a nudge from the plant about its air, water, or light. Here’s how specialists diagnose those signals and the small adjustments that bring foliage back to lush green.

Brown on a peace lily is usually a care mismatch, not a fatal disease. The plant is reacting to dry air, irregular watering, hard tap water, or harsh sun. Each cause marks leaves a little differently, which helps you zero in on the fix.