Why Are My Plant Leaves Curling?
Learn why plant leaves curl, how to identify the likely cause, and what you can do to help your plant recover.
What Causes Plant Leaves to Curl?
Curling leaves are a common sign that a plant is experiencing some type of stress. The exact cause can vary depending on the plant species and growing conditions.
Instead of changing everything at once, check the plant’s growing environment and look for additional symptoms. The pattern of the curling can often provide useful clues.
Underwatering
Dry soil and insufficient water can cause leaves to curl, become limp, or develop crispy edges.
Too Much Light
Intense direct sunlight can increase water loss and stress leaves, especially on sensitive plants.
Heat Stress
High temperatures can cause leaves to curl as the plant tries to reduce moisture loss.
Low Humidity
Dry indoor air can contribute to curled leaves, particularly in tropical houseplants.
Plant Pests
Spider mites, aphids, thrips, and other pests can damage leaves and cause abnormal growth.
Root or Watering Problems
Overwatering, poor drainage, or damaged roots can interfere with normal water uptake.
How to Identify the Cause
Before treating curling leaves, inspect several parts of the plant. Look at the soil, leaves, stems, roots if accessible, and the surrounding environment.
Curled Leaves From Underwatering vs. Overwatering
Curling can happen with both too little and too much water. Looking at the soil and other symptoms can help distinguish between them.
| Possible Issue | What You May Notice | What to Check |
|---|---|---|
| Underwatering | Dry soil, curled or limp leaves, crispy edges | Check soil moisture and watering frequency |
| Overwatering | Wet soil, yellowing, soft leaves, slow growth | Check drainage and how long the soil stays wet |
| Heat stress | Curling with dryness or crispy edges | Check temperature and nearby heat sources |
| Pests | Curling with spots, stippling, insects, or webbing | Inspect leaves and stems closely |
How to Fix Curling Plant Leaves
1. Check the Soil Before Watering
Feel the soil rather than watering automatically according to a fixed schedule. If the soil is very dry and the plant normally needs regular moisture, water it thoroughly and allow excess water to drain away.
2. Adjust the Light
If the plant is exposed to intense direct sunlight and the leaves are showing signs of stress, consider moving it to a location with suitable filtered or indirect light.
3. Improve Humidity When Appropriate
Tropical plants may struggle when indoor air becomes very dry. Consider improving the surrounding humidity while maintaining good airflow around the plant.
4. Inspect for Pests
Examine both sides of leaves, stems, and new growth. Look for spider mites, aphids, thrips, scale, or other signs of infestation.
If pests are present, isolate the affected plant when practical and use an appropriate treatment for the pest involved.
5. Check Drainage
Make sure the container has adequate drainage and that excess water can leave the pot. Constantly wet soil can damage roots and eventually affect the plant’s ability to take up water.
Why Are New Leaves Curling?
If only new leaves are curling or developing unusual shapes, pay particular attention to pests, environmental changes, watering problems, temperature, and light.
New growth can also naturally appear somewhat curled before it fully expands. If the leaf gradually opens and develops normally, curling during early growth may not indicate a problem.
Plant-Specific Examples
Monstera Leaves Curling
Check watering, humidity, light exposure, temperature, and pests. Monstera plants can react to dry conditions and environmental stress with curled or distorted leaves.
Pothos Leaves Curling
Check whether the soil has become very dry. Also inspect the plant for pests and make sure it is not exposed to excessive heat or intense direct sunlight.
Peace Lily Leaves Curling
Peace lilies can show visible stress when their soil becomes too dry. Check soil moisture first, while also making sure the pot is not remaining waterlogged.
Calathea Leaves Curling
Check humidity, watering consistency, temperature, light, and pests. Calatheas can be particularly sensitive to changes in their environment.
How to Prevent Curling Leaves
- Check soil moisture before watering.
- Provide the appropriate amount of light for the plant.
- Avoid placing plants next to strong heat sources or drafts.
- Maintain suitable humidity for plants that require it.
- Inspect leaves regularly for pests.
- Use containers with adequate drainage.
- Avoid making several major environmental changes at once.
Not Sure What’s Wrong With Your Plant?
Start with the symptoms you’re seeing and explore possible causes, related plant problems, and practical next steps.
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