I’ve had my peace lily 5-6 years and recently the tips of a large amount of the lower leaves are getting burnt black. I don’t know if this is due to the location (its location hasn’t varied at all), overwatering or the need to be replanted! Can you please advise me?
Black tips on the ends of leaves can result from over fertilizing or excess salts from conditioned water.
You can flush the soil with fresh water to help. If your plant has not been repotted in some time, this may be a good time.
In the future use distilled water or leaving the water sit on the counter for 48 hours will also help.