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Help! Why Are My Peace Lily’s Leaves Turning Black?

Ask The Plant Expert:

I’ve just got back from holiday and my peace lily’s leaves are turning black at the edges. I watered it before I went 2 weeks ago, but the curtains have remained closed. Could the lack of sunlight be causing this, or the water? – Matthew

Flower Shop Network Plant Expert Reply:


Peace Lily House PlantI am going to assume that water is the issue here, or possible cold temperatures. If the soil became dry while you were gone, the leaves would turn brown first, and then turn black. The peace lily would also appear to be wilting.  If you turned your heat way down while you were out of town, the leaves would turn black.

Both of these situation can be overcome. Begin by hydrating your soil. Make sure that all soil particles are rehydrated. However, you want to make sure that excess moisture can drain away from the peace lily plant.  Then make sure the room with the peace lily is kept between 55-68 degrees at night, and 68-90 degrees during the day.

I would remove all leaves that have turned black, and then wait for the plant to produce new growth. The new growth should be healthy and green.

If you want more information about peace lilies go to What Causes Black Leaves On A Peace Lily  and/or Peace Lily Plant Care & Info.

I hope this information was helpful. Please let me know if you need help with anything else.

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  1. I also have a plant (no bloom) with long leaves that are kind of crinkly but the ends of theleaf turns black. I cannot find the name of the plant. they are long leaves and when they first come out they look healthy and then start turning black like the peace lily

  2. Not sure what type of plant it is. Could be a Bird’s Nest Fern (Aspelnium nidus). The first thing I would check is moisture level. Have you been keeping the plant evenly moist. Letting it dry out or keeping it too wet can cause the leaves to turn black. If you can rule out a watering issue, then the issue might be fungal or viral. Without seeing the leaf, I can determine if it is a fungal or viral problem. Send us a photo and we’ll go from there.

  3. Black leaf tips are more likely to be caused by underwatering than overwatering. (Yellowing of leaves is more likely with overwatering.) However, the black tips are more likely an indication of low humidity than underwatering. If possible, try grouping the peace lily with other houseplants to raise the humidity in the area around the plants. The blackened leaf tips could also be due to excess salts in the soil, either from too much fertilizer or fluoride/chlorine in the water.

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