Live to Plant

Why Are My Exacum Plant Leaves Turning Yellow?

Updated: April 3, 2022

Exacum plants, also known as Persian violets or German violets, are popular houseplants that are prized for their beautiful flowers and lush foliage. However, if you notice that the leaves on your exacum plant are turning yellow, it can be a cause for concern. In this article, we will explore the possible reasons why your exacum plant leaves are turning yellow and what you can do to fix the problem.


One of the most common reasons why exacum plant leaves turn yellow is overwatering. Exacum plants need to be watered regularly, but they don’t like to be sitting in water. When the soil is constantly wet, it can lead to root rot, which causes the leaves to turn yellow and eventually fall off. To avoid overwatering your exacum plant, make sure to let the soil dry out slightly between waterings. You can test the soil moisture by sticking your finger about an inch deep into the soil. If it feels dry, it’s time to water your plant.


On the other hand, underwatering can also cause exacum plant leaves to turn yellow. When a plant doesn’t get enough water, its leaves can become wilted and yellow. To avoid underwatering your exacum plant, make sure to water it regularly and thoroughly. However, don’t let the soil become too dry between waterings.

Lack of Nutrients

Exacum plants require certain nutrients to grow healthy and strong. If your plant isn’t getting enough nutrients, it can lead to yellowing leaves. You can remedy this by fertilizing your exacum plant every four to six weeks during its growing season (spring and summer). Use a balanced fertilizer that contains equal parts nitrogen, phosphorus, and potassium.


Pests can also be a reason why exacum plant leaves turn yellow. Spider mites and aphids are common pests that can infest exacum plants. These pests feed on the plant’s sap, which can cause yellowing leaves, curling leaves, and stunted growth. To get rid of pests, you can use insecticidal soap or neem oil. Make sure to follow the instructions on the product label.


Finally, exacum plants can be susceptible to certain diseases that can cause yellowing leaves. One common disease is powdery mildew, which appears as a white powdery coating on the leaves. This disease can cause the leaves to turn yellow and fall off. To prevent powdery mildew, make sure to provide good air circulation around your plant and avoid overwatering.


How often should I water my exacum plant?

Exacum plants should be watered regularly but don’t let the soil become too wet or too dry. Water your plant when the top inch of soil feels dry to the touch.

Can I prune my exacum plant?

Yes, you can prune your exacum plant to encourage bushier growth and remove any dead or yellowing leaves.

Should I mist my exacum plant?

Exacum plants don’t require misting, but they do appreciate a humid environment. You can place a tray of water near your plant or use a humidifier to increase humidity.

Can I propagate my exacum plant?

Yes, you can propagate your exacum plant by taking stem cuttings and rooting them in water or potting mix.

In conclusion, yellowing leaves on an exacum plant can be caused by overwatering, underwatering, lack of nutrients, pests, or disease. By identifying the problem and taking appropriate action, you can help your exacum plant regain its health and beauty.