Question
why do the ends of the leaves of the peace Lilly turn brown on edges?

Answer
Hi John,

Unfortunately, the answer is that there are several reasons for this generic symptom on a peace lily. Use the processed of elimination to determine which are likely to apply to your peace lily.

Hard water or softened water have excess minerals that cause brown leaf tips and edges. Switch to filtered, distilled or rainwater.

Using too much fertilizer also adds excess minerals to the soil. If you fertilize, do it only when the plant is growing vigorously and dilute it to HALF-STRENGTH.

Allowing the soil to dry to the point that the plant wilts will cause brown leaf tips. Try to water just before the leaves start to wilt.

Keeping the soil constantly wet will cause dark brown tips that spreads to the entire leaf. Allow the soil to dry almost to the wilt point before watering.

I hope this helps you identify the cause of the problem. Trim off the brown tips and edges. This will make the plant look more attractive and will allow you to determine if you have eliminated the cause.

Please let me know if any of this is unclear or if you have any additional questions.

Visit my website at  www.HorticulturalHelp.com

If you would like to e-mail me some photos, I may be able to provide some additional insights.

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Regards,
Will Creed, Interior Landscaper
Horticultural Help, NYC

You can E-mail me directly at: [email protected]