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Why Are My Flamethrower Plant Leaves Turning Yellow?

Updated: June 16, 2022

Flamethrower plants, also known as Chrysanthemum paludosum or Dendranthema paludosum, are a type of perennial plant that is native to East Asia. They are known for their beautiful yellow flowers and their unique ability to shoot flames when they come into contact with an open flame. However, if you notice that the leaves of your flamethrower plant are turning yellow, it could be a sign of a problem.

Lack of Nutrients

One of the most common reasons why flamethrower plant leaves turn yellow is due to a lack of nutrients. These plants require an adequate amount of nutrients, such as nitrogen, phosphorus, and potassium, to grow properly. If your plant is not receiving enough of these essential nutrients, it can cause the leaves to turn yellow.

To remedy this issue, you can try fertilizing your flamethrower plant with a balanced fertilizer that contains all of the necessary nutrients. Be sure to follow the instructions on the fertilizer package carefully to avoid over-fertilizing, which can also cause leaf yellowing.

Pests and Diseases

Another common cause of yellowing leaves in flamethrower plants is pests and diseases. These plants are susceptible to a variety of pests, including spider mites, aphids, and thrips. If you notice small insects or webs on your plant’s leaves, it may be a sign that it is infested with pests.

Diseases such as powdery mildew and root rot can also cause yellowing leaves in flamethrower plants. Powdery mildew appears as a white powdery substance on the leaves, while root rot causes the roots to become mushy and black.

To prevent pests and diseases from affecting your flamethrower plant, make sure to keep it in a well-ventilated area with plenty of sunlight. Also, avoid over-watering and allow the soil to dry out between watering sessions.

Environmental Stress

Flamethrower plants can also experience yellowing leaves due to environmental stress. This can include exposure to extreme temperatures, high humidity, or poor air quality. If you notice that your plant is located in an area with poor air circulation, it may be a good idea to move it to a different location.

Additionally, if your plant is exposed to extreme temperatures, such as direct sunlight or freezing temperatures, it can cause the leaves to turn yellow. To prevent this, make sure to keep your flamethrower plant in a location that is protected from extreme temperatures.


Over-watering can also cause yellowing leaves in flamethrower plants. These plants require well-draining soil and do not tolerate waterlogged conditions. If you notice that the soil around your plant is constantly moist or that the leaves are wilted, it may be a sign of over-watering.

To remedy this issue, allow the soil to dry out completely before watering again. You can also improve soil drainage by adding sand or perlite to the soil mixture.


Yellowing leaves in flamethrower plants can be caused by a variety of factors, including lack of nutrients, pests and diseases, environmental stress, and over-watering. By identifying the underlying cause of the problem and taking appropriate measures, you can help your flamethrower plant thrive and produce its beautiful yellow flowers.


How often should I water my flamethrower plant?

Flamethrower plants require well-draining soil and should be allowed to dry out completely between watering sessions. Depending on environmental conditions, this may be once a week or less frequently.

Can I use any fertilizer on my flamethrower plant?

It is recommended to use a balanced fertilizer that contains equal amounts of nitrogen, phosphorus, and potassium. Follow the instructions on the fertilizer package carefully to avoid over-fertilizing.

Can I grow a flamethrower plant indoors?

Flamethrower plants require plenty of sunlight and well-ventilated conditions, so it may be difficult to grow them indoors. However, if you have a sunny location with good air circulation, it is possible to grow them successfully indoors.