Q.why are the tips of the leaves on my peace lily turning brown?
Just the tips of the leaves turn brown on my peace lily and some of the leaves on a lady palm. Have never had this problem before. Both of these plants are indoor plants and in or near a north window. I live in northern Ohio.

Certified GKH Gardening Expert
Underwatering is most common reason for brown tips/edges in plants. Other possible causes of brown leaf tips could be dry air or too much direct light. Mist the foliage often and make sure it has bright, indirect light. Also, remove the affected leaves. This article may also help: https://www.gardeningknowhow.com/plant-problems/environmental/what-causes-brown-edges-on-leaves-of-plant.htm