Why Is My Monstera Stem Turning Yellow? Key Causes & Solutions

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If you’re a monstera plant owner, you may have noticed your plant’s stem turning yellow and wondered why this is happening. This article will explore the various reasons behind this issue and provide you with practical solutions to tackle the problem. By understanding the underlying causes, you’ll be better equipped to care for your monstera and ensure it thrives in your home.

Common Causes of Yellowing Stems in Monsteras


One prevalent cause for yellowing Monstera stems is overwatering. This occurs when the plant receives more water than it needs, resulting in the roots taking in excessive water and hindering nutrient absorption. To maintain optimal plant health, it is crucial to establish a well-planned watering schedule, ensuring the soil remains damp but not oversaturated.


Conversely, underwatering can also lead to yellowing stems in Monsteras. If the soil becomes too dry, the plant’s oldest leaves will begin to turn yellow. To resolve this issue, monitor the soil’s moisture levels and water the Monstera whenever the top few inches of the soil are dry, ensuring that the plant receives adequate hydration.

Nutrient Deficiencies

Monsteras require a specific balance of nutrients for healthy growth, and a lack of essential nutrients can lead to yellowing stems. In particular, a deficiency in nitrogen or magnesium can cause this issue. To address nutrient deficiencies, consider using a well-balanced fertilizer, following the product instructions to provide the plant with the necessary nutrients.

Pest Infestation

Yellowing stems can also result from pest infestations. Common pests that affect Monsteras include spider mites, mealybugs, and scale insects. These pests can damage the plant’s stem and leaves, leading to yellowing and deterioration. To combat pest infestations, treat the affected plant with appropriate insecticides or natural solutions such as neem oil or insecticidal soap, and regularly check for signs of pests.

Environmental Factors Impacting Monstera Health

Various environmental factors play a crucial role in maintaining the health and appearance of your Monstera plant. In this section, we will discuss some key environmental aspects such as light intensity, humidity, and temperature.

Light Intensity

Monstera plants thrive in bright, indirect light. However, too much bright light can lead to your Monstera’s stem turning yellow. When exposed to excessive light, the plant is unable to produce sufficient chlorophyll for photosynthesis, resulting in yellowing of stems and leaves. To prevent this issue, ensure that your Monstera receives indirect sunlight or place it in a location with dappled light. Regularly rotating the plant is also necessary so that all parts can receive an equal amount of light for balanced growth.


Monsteras are tropical plants and, therefore, prefer environments with high humidity. Low humidity levels can cause the plant’s stem to turn yellow due to dehydration. To maintain the ideal humidity levels for your Monstera, consider these steps:

  • Place a tray filled with water and pebbles beneath the plant pot, allowing the water to evaporate and increase humidity around the plant.
  • Regularly mist the leaves with water, effectively imitating the natural humidity of the plant’s native environment.
  • Group your Monstera with other plants to create a more humid microclimate.
  • Use a humidifier to control the humidity levels in the room where the plant is placed.


Temperature plays a vital role in the overall health of a Monstera plant. Monsteras prefer a consistent temperature range of 65-80°F (18-27°C). Fluctuations in temperature can cause the plant’s stem to turn yellow, as it struggles to adapt to the sudden changes. Keep the plant away from areas with draft, such as near air conditioners, heating vents, or open windows. Regularly monitor the temperature levels around the plant to ensure optimal growth conditions are maintained.

Cultural Practices to Prevent Yellow Stems

Proper Watering Techniques

One way to prevent yellowing in Monstera stems is by following proper watering techniques. Over-watering or under-watering can cause stress for the plant, leading to yellow stems. To ensure the right moisture level, wait until the top 2 inches of soil are dry before watering. Then, water thoroughly until excess water drains from the bottom of the pot. Ensure the pot has proper drainage to prevent root rot and fungal growth, which contribute to yellowing of the plant.


Providing the right nutrients for your Monstera can help prevent yellow stems. Too much or too little fertilizer can lead to discoloration and poor overall health. It’s essential to use a well-balanced, slow-release fertilizer formulated for houseplants. Apply fertilizer according to the manufacturer’s recommendations, usually every 4-6 weeks during the growing season.

  • For nitrogen deficiency, use a fertilizer with higher nitrogen content.
  • For potassium deficiency, choose a fertilizer with a balanced ratio of potassium.

Always follow the instructions on the fertilizer package to avoid over-fertilization, which can cause more harm to the plant.


Regular pruning is crucial for maintaining a healthy Monstera plant and preventing yellow stems. Prune damaged or old leaves and stems, which allows the plant to focus its energy on new growth. When pruning yellowed or damaged stems, use sharp and clean pruning shears to avoid spreading disease or causing additional damage.

Proper pruning also promotes better air circulation, reducing the risk of fungal infections that can contribute to yellow stems. During the growing season, it is essential to prune your Monstera plant regularly to maintain optimal health and prevent future problems.

Diagnosing and Treating Monstera Stem Issues

Monitoring Plant Health

It is essential to observe your Monstera’s overall health and recognize the signs of potential issues. Yellowing stems can indicate several problems, including over-watering, under-watering, or pest infestation. Ensure the plant is receiving the appropriate amount of water by checking the soil moisture; the topsoil should be dry before you water the Monstera again. Also, inspect the plant for signs of pests, such as mealybugs, aphids, spider mites, and thrips.

Implementing Corrective Measures

If you identify an issue causing your Monstera’s stem to turn yellow, several corrective measures can help prevent further decline. Should the stem issue be caused by over-watering or improper drainage, remove the plant from its pot, clean the roots, and repot it using well-draining soil. Be cautious with watering, making sure not to cause waterlogging by only watering when the topsoil appears dry.

In case of a pest infestation, take action to eliminate the infestation by using insecticidal soap or a natural remedy, such as neem oil, to treat your plant. Dispose of any affected areas of the Monstera carefully to prevent the pests from spreading.

When to Seek Professional Help

As a plant owner, you might encounter situations in which professional assistance is necessary. If you have tried the above measures to no avail, or if you cannot precisely determine the cause of the yellowing stem, consider seeking help from a local nursery or garden center. Bringing a sample of the affected leaf or stem can help the professional diagnose the issue correctly and provide you with the best course of action to restore your Monstera’s health.

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