Why Are Your Peace Lily Leaves Turning Yellow and Brown?

Peace lilies are beautiful houseplants that can bring life and color into any room. However, when the leaves start to turn yellow and brown, it can be quite concerning for plant owners. In this article, we will explore the common causes of peace lily leaves turning yellow and brown and how to fix them.

1. Overwatering

One of the most common reasons why peace lily leaves turn yellow and brown is overwatering. Peace lilies need moist soil but not waterlogged soil. When the soil is constantly wet, the roots cannot get enough oxygen, leading to root rot. Root rot can cause yellowing and browning of leaves, as well as wilting and stunted growth.

To fix an overwatered peace lily, you need to stop watering it immediately and let the soil dry out completely. You may also need to repot the plant in fresh, well-draining soil.

2. Underwatering

On the other hand, if you notice the edges of the leaves turning brown and crispy, it could be a sign of underwatering. Peace lilies need consistent moisture to thrive, so if the soil dries out too much between waterings, the leaves will start to brown and wilt.

To fix an underwatered peace lily, water it thoroughly and regularly, making sure the soil stays evenly moist but not waterlogged.

3. Low Humidity

Peace lilies are tropical plants that prefer high humidity. When the air is too dry, the leaves can turn yellow and brown and develop brown tips or edges. This is because the lack of humidity makes it difficult for the plant to absorb enough water from the soil through its roots.

To increase humidity around your peace lily, you can mist the leaves with water, place the plant on a tray filled with pebbles and water, or use a humidifier.

4. Direct Sunlight

While peace lilies can tolerate low to medium light conditions, they do not like direct sunlight. Too much sun exposure can cause the leaves to burn and turn yellow or brown. If your peace lily is near a south-facing window or receiving direct sunlight, it may be getting too much sun.

To prevent sun damage, move your peace lily to a spot with bright but indirect light, such as a north-facing window, or filter the sunlight with sheer curtains or blinds.

5. Pest Infestations

Finally, peace lilies can also be susceptible to pest infestations, such as spider mites, mealybugs, and scale insects. These pests can suck the sap out of the leaves, causing yellowing, browning, and possibly even leaf drop.

To get rid of pest infestations, you can wipe the leaves with a damp cloth, spray them with insecticidal soap, or use natural predators, such as ladybugs or lacewings.

A peace lily with yellowing leaves

In conclusion, there are several reasons why your peace lily leaves may be turning yellow and brown. By identifying the cause and taking the appropriate steps, you can help your plant recover and thrive. Remember to give your peace lily consistent moisture, high humidity, and filtered light, and watch out for signs of pest infestations.

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