Updated: July 2, 2023

Love lilies, also known as peace lilies, are popular houseplants admired for their elegant white flowers and lush green leaves. These plants are relatively easy to care for and can thrive in various indoor environments. However, it can be concerning when brown spots start to appear on the leaves of your love lily plant. In this article, we will explore some common reasons why love lilies develop brown spots and discuss how to address these issues.


One of the most common causes of brown spots on love lily leaves is overwatering. Love lilies prefer slightly moist soil but are susceptible to root rot if they are consistently sitting in waterlogged conditions. When the roots become waterlogged, they cannot properly absorb oxygen, leading to stress and damage to the plant.

To avoid overwatering your love lily, ensure that the pot has proper drainage holes to allow excess water to escape. Additionally, only water the plant when the top inch of soil feels dry to the touch. It is better to underwater a love lily than to overwater it.


On the other hand, underwatering can also cause brown spots on love lily leaves. If the plant is not receiving enough water, it can become dehydrated, leading to stress and leaf damage. Underwatered love lilies may develop brown spots that start at the leaf tips and gradually spread throughout the foliage.

To prevent underwatering, make sure you water your love lily regularly, especially during warmer months or if it is placed in a particularly dry environment. However, be cautious not to overcompensate and end up overwatering the plant.

Inadequate Lighting

Another factor that can contribute to brown spots on love lilies is inadequate lighting. Love lilies thrive in bright, indirect light. If they are exposed to direct sunlight for extended periods, their leaves can become scorched and develop brown spots. On the other hand, if they are placed in low light conditions, the lack of light can cause stress and lead to leaf discoloration.

To provide your love lily with the ideal lighting conditions, place it near a window with filtered sunlight. If you notice brown spots developing on the leaves, consider moving the plant to a location with slightly less direct light or using sheer curtains to diffuse the sunlight.

Temperature and Humidity Fluctuations

Love lilies prefer warm and humid environments. Drastic temperature changes or low humidity levels can cause stress to the plant, resulting in brown spots on the leaves. Cold drafts from windows or air conditioning units can be particularly detrimental to love lilies.

To maintain an optimal environment for your love lily, keep it away from cold drafts and ensure a consistent temperature between 65-85 degrees Fahrenheit. Additionally, you can increase humidity levels by placing a tray filled with water near the plant or using a humidifier.

Fungal Infections

Fungal infections can also cause brown spots on love lily leaves. One common fungal disease that affects love lilies is leaf spot disease. This disease is characterized by dark brown or black spots on the leaves, often surrounded by a yellow halo. If left untreated, the spots can enlarge and merge, leading to significant leaf damage.

To prevent or treat fungal infections, it is essential to maintain good plant hygiene. Avoid overhead watering, as wet leaves create a favorable environment for fungal growth. Instead, water the plant at the soil level. Additionally, remove any infected leaves promptly and consider using a fungicide specifically formulated for houseplants.

Pest Infestations

Pests such as spider mites, mealybugs, and aphids can also cause brown spots on love lily leaves. These pests feed on the plant sap and can cause stress and damage, leading to the development of brown spots.

To control pest infestations, regularly inspect your love lily for any signs of pests. If you notice small insects, webs, or sticky residue on the leaves, take immediate action. You can use insecticidal soap or neem oil to treat the infested plant, ensuring to follow the instructions on the product label.


Brown spots on love lily leaves can be caused by various factors such as overwatering, underwatering, inadequate lighting, temperature and humidity fluctuations, fungal infections, or pest infestations. By understanding these potential causes and taking appropriate measures, you can help your love lily regain its health and beauty. Remember to provide proper watering, adequate lighting, and a suitable environment for your love lily to thrive. With a little care and attention, your love lily will continue to grace your home with its stunning white flowers and vibrant green foliage.