Why Are My Kalanchoe Plant Leaves Turning Yellow?

Kalanchoe plants are popular houseplants known for their vibrant and long-lasting blooms. However, it can be disheartening to see their leaves turning yellow. Yellowing leaves in a kalanchoe plant can be a sign of several underlying issues, ranging from overwatering to nutrient deficiencies. In this article, we will explore the various reasons why your kalanchoe plant leaves may be turning yellow and how to remedy the situation.

Overwatering

One of the most common reasons for yellowing leaves in kalanchoe plants is overwatering. Kalanchoes are succulent plants that store water in their leaves, making them sensitive to excessive moisture. When a kalanchoe is overwatered, its roots become waterlogged, leading to root rot and nutrient deficiencies.

To prevent overwatering, it is important to let the soil dry out between waterings. Before watering your kalanchoe, check the moisture level by sticking your finger about an inch into the soil. If it feels dry, it is time to water. Additionally, ensure that the pot has proper drainage holes to allow excess water to escape.

Underwatering

While overwatering is a common issue, underwatering can also cause yellow leaves in kalanchoe plants. Succulent plants like kalanchoes require well-draining soil and periodic watering to thrive. If a kalanchoe is not receiving enough water, its leaves will begin to turn yellow and eventually wilt.

To determine if your kalanchoe needs watering, check the moisture level of the soil as mentioned earlier. If the soil feels extremely dry or if the plant appears droopy, it is time to water. However, avoid overcompensating by giving your kalanchoe excessive amounts of water at once.

Lack of sunlight

Another factor that can cause yellowing leaves in kalanchoe plants is inadequate sunlight. Kalanchoes are sun-loving plants that require bright, indirect light to thrive. Insufficient light exposure can lead to weak growth and yellowing of the leaves.

To ensure your kalanchoe gets enough sunlight, place it near a window where it can receive at least six hours of indirect sunlight per day. If natural light is limited in your home, consider using artificial grow lights to supplement the plant’s light requirements.

Nutrient deficiencies

Nutrient deficiencies can also contribute to yellowing leaves in kalanchoe plants. Kalanchoes require a balanced diet of essential nutrients, including nitrogen, phosphorus, and potassium, to maintain healthy foliage. A lack of these nutrients can manifest as yellowing or discoloration of the leaves.

To address nutrient deficiencies, consider fertilizing your kalanchoe plant regularly during its active growing season. Use a balanced houseplant fertilizer and follow the instructions on the packaging for proper application. Be cautious not to over-fertilize, as this can cause leaf burn and other issues.

Pests and diseases

In some cases, yellowing leaves in kalanchoe plants may be a result of pest infestations or diseases. Common pests that affect kalanchoes include mealybugs, aphids, and spider mites. These pests feed on the plant’s sap, causing damage and discoloration of the leaves.

Inspect your kalanchoe plant regularly for signs of pests such as small insects, webbing, or sticky residue on the leaves. If you notice any infestation, treat it immediately using an appropriate insecticidal soap or horticultural oil. For severe infestations or diseases, it may be necessary to isolate the affected plant to prevent further spread.

Environmental stress

Environmental stress factors such as temperature fluctuations, drafts, or sudden changes in humidity can also cause yellowing leaves in kalanchoe plants. These stressors disrupt the plant’s metabolic processes and can lead to leaf discoloration or drop.

To minimize environmental stress, maintain a consistent temperature range of around 60-85°F (15-29°C) for your kalanchoe plant. Avoid placing it near drafty windows or vents, as well as sudden temperature changes. Additionally, ensure adequate humidity levels by placing a tray of water near the plant or using a humidifier if necessary.

Conclusion

Yellowing leaves in kalanchoe plants can be a sign of various issues, including overwatering, underwatering, lack of sunlight, nutrient deficiencies, pest infestations, diseases, or environmental stress. By identifying the underlying cause and taking appropriate action, you can help your kalanchoe regain its health and vibrant foliage. Remember to provide proper watering, adequate sunlight, balanced nutrients, and a pest-free environment to ensure the longevity and beauty of your beloved kalanchoe plant.