Updated: July 1, 2023

Shangri La plants, also known as Calathea plants, are popular houseplants that are loved for their beautiful foliage. These tropical plants have large, colorful leaves that can add a touch of elegance to any indoor space. However, one common issue that many Shangri La plant owners face is curled leaves. The leaves of these plants can curl for a variety of reasons, and understanding the causes can help you prevent and address this problem effectively.

Insufficient Humidity

One of the most common reasons why Shangri La plant leaves curl is insufficient humidity. These tropical plants thrive in high humidity environments, similar to their natural habitat in the rainforests of South America. When the air is too dry, the plant may struggle to retain moisture in its leaves, causing them to curl up.

To increase humidity levels for your Shangri La plant, there are several steps you can take. First, you can place a humidifier near the plant to add moisture to the air. Alternatively, you can group your plants together or place them on trays filled with water and pebbles. As the water evaporates, it will increase the humidity around the plants. Another option is to mist the leaves regularly with water to provide some moisture.

Inadequate Watering

Improper watering practices can also lead to curled leaves in Shangri La plants. These plants prefer consistently moist but not soggy soil. Overwatering can cause root rot and other issues that affect the plant’s ability to absorb water properly. On the other hand, underwatering can lead to dehydration and curling of the leaves.

To avoid both overwatering and underwatering, it is essential to develop a watering routine based on the specific needs of your Shangri La plant. Check the soil regularly by sticking your finger about an inch deep into it. If the soil feels dry, it’s time to water. However, if it feels too wet, hold off on watering until the top inch of soil is dry.

Temperature Extremes

Extreme temperatures can have a negative impact on the health of Shangri La plants and cause their leaves to curl. These plants prefer temperatures between 65°F and 85°F (18°C – 29°C). Exposure to temperatures outside this range, especially sudden drops or drafts, can stress the plant and lead to leaf curling.

To prevent temperature-related issues, it is crucial to keep your Shangri La plant away from cold drafts, air conditioning vents, and heating sources. Avoid placing them near windows during winter months when temperatures can fluctuate significantly. Additionally, if you notice that your plant is experiencing temperature stress, move it to a more suitable location and allow it time to recover.

Pests and Diseases

Pests and diseases can also cause Shangri La plant leaves to curl. Common pests that affect these plants include spider mites, aphids, and mealybugs. These tiny insects feed on the sap of the plant, causing leaves to curl, yellow, or develop spots. Fungal diseases such as powdery mildew can also lead to leaf curling.

To prevent pests and diseases from affecting your Shangri La plant, regularly inspect the leaves for any signs of infestation or disease. If you notice any pests, remove them manually or use an organic insecticidal soap to eliminate them. In the case of fungal diseases, ensure proper air circulation around the plant and avoid overwatering. If necessary, you can use fungicides labeled for use on houseplants.

Nutritional Deficiencies

Shangri La plants require a balanced supply of nutrients to thrive. Nutritional deficiencies can manifest in various ways, including curled leaves. Common deficiencies that can cause leaf curling include nitrogen, magnesium, and potassium deficiencies.

To address nutritional deficiencies, it is important to provide your Shangri La plant with a balanced fertilizer specifically formulated for houseplants. Follow the instructions on the fertilizer packaging and apply it at regular intervals during the growing season. Additionally, ensure that your plant is placed in well-draining soil to prevent nutrient imbalances caused by waterlogged roots.

In conclusion, curled leaves in Shangri La plants can be attributed to several factors, including insufficient humidity, inadequate watering practices, extreme temperatures, pests and diseases, and nutritional deficiencies. By addressing these issues and providing the proper care, you can help your Shangri La plant regain its health and beauty. Remember to monitor your plant closely, make adjustments as needed, and enjoy the lush foliage of your Shangri La plant for years to come.