Updated: March 23, 2022

Catmint is a perennial herb that belongs to the mint family. It is known for its small, lavender-blue flowers that attract bees and butterflies. The plant is easy to grow and maintain, making it a popular choice for gardens. However, catmint plant leaves can sometimes curl up, which can be a cause for concern for gardeners. In this article, we will explore the various reasons why catmint plant leaves curl.


Overwatering is one of the most common causes of catmint plant leaves curling. When the soil is constantly damp, it can cause the plant’s roots to rot, which can lead to leaf curling. If you notice that your catmint plant has curled leaves and the soil is wet, reduce the frequency of watering. Make sure that the soil dries out before you water again.


Underwatering is another reason why catmint plant leaves can curl up. When the soil is too dry, it can cause the plant to become stressed, which can lead to leaf curling. If you notice that your catmint leaves are curled and the soil is dry, water the plant immediately. Make sure that you water deeply to ensure that the water reaches the roots.


Pests such as spider mites, aphids, and thrips can cause catmint plant leaves to curl up. These insects feed on the sap of the plant, which can cause stress and damage to the leaves. If you notice any signs of pest infestation, such as small webs or tiny insects on the leaves, treat your catmint with an insecticidal soap or neem oil.


Disease can also cause catmint plant leaves to curl up. Fungal diseases such as powdery mildew and downy mildew can affect the leaves of the plant and cause them to curl. If you notice any signs of disease, such as white or grayish powdery spots on the leaves, remove the affected leaves and treat the plant with a fungicide.

Environmental factors

Environmental factors such as temperature and humidity can also cause catmint plant leaves to curl up. If the temperature is too high or too low, or if the humidity is too low, it can cause stress to the plant and lead to leaf curling. Make sure that your catmint is planted in an area with adequate sunlight and ventilation, and maintain a consistent temperature and humidity level.

Nutrient deficiency

Catmint plant leaves can also curl up if the plant is lacking in essential nutrients such as nitrogen, phosphorus, or potassium. If you notice that your catmint leaves are curled and discolored, it may be a sign of nutrient deficiency. You can fertilize your catmint with a balanced fertilizer to provide it with the necessary nutrients.

Overall, there are several reasons why catmint plant leaves can curl up. By identifying the cause of the problem, you can take steps to address it and ensure that your catmint plant remains healthy and vibrant.


Can I prevent my catmint plant from getting pests?

Yes, you can prevent pest infestation by practicing good gardening habits such as removing dead plant material, maintaining good soil drainage, and keeping your garden clean and free of debris.

Is it safe to use insecticidal soap or neem oil on my catmint plant?

Yes, both insecticidal soap and neem oil are safe for use on catmint plants as long as they are used according to the instructions on the label.

How often should I fertilize my catmint plant?

You should fertilize your catmint plant once every two months during the growing season (spring and summer). Use a balanced fertilizer with an equal ratio of nitrogen, phosphorus, and potassium.