Yellow leaves on calla lily can be a frustrating sight for any gardener. Not only do they detract from the plant’s beauty, but they may also indicate an underlying issue that needs to be addressed. In this article, we will explore the common causes of yellow leaves on Calla Lily and provide tips on how to fix the problem.
One of the most common causes of yellow leaves on calla lilies is overwatering. When the soil remains consistently wet, the roots may become waterlogged, leading to root rot. This can cause the leaves to turn yellow and wilt. Additionally, if the soil lacks proper drainage, excess water may accumulate in the soil, causing the same issue.
Another potential cause of yellow leaves on calla lilies is underwatering. When the plant does not receive enough water, it may become stressed, leading to yellowing of the leaves. This is especially common in hot, dry weather or if the plant is located in a particularly sunny spot. In some cases, the yellowing may be accompanied by brown, crispy edges on the leaves.
What Causes Yellow Leaves on Calla Lily
Environmental Factors
Lighting
Yellow leaves on calla lily may be caused by inadequate lighting. Calla lilies require bright, indirect light to thrive. If your plant is not getting enough light, it may develop yellow leaves.
If you are growing your calla lily indoors, place it near a window where it can receive bright, indirect light. If you are growing your calla lily outdoors, make sure it is planted in a location that receives partial shade.
Temperature
Temperature can also affect the health of your calla lily. Calla lilies prefer temperatures between 60 and 75 degrees Fahrenheit. If your plant is exposed to temperatures outside of this range, it may develop yellow leaves.
If you are growing your calla lily indoors, make sure it is not placed near a drafty window or heating vent. If you are growing your calla lily outdoors, make sure it is planted in a location that is protected from extreme heat or cold.
Humidity
Humidity levels can also impact the health of your calla lily. Calla lilies prefer moderate to high humidity levels. If the air in your home or growing environment is too dry, your plant may develop yellow leaves.
If you are growing your calla lily indoors, consider using a humidifier to increase the humidity levels in the air. If you are growing your calla lily outdoors, make sure it is planted in an area that has naturally high humidity levels.
By paying attention to these environmental factors, you can help prevent yellow leaves on your calla lily and keep your plant healthy and vibrant.
Watering and Fertilization
Watering Frequency
To prevent yellow leaves on your calla lily, it is important to water it correctly. Overwatering can cause root rot and underwatering can lead to dehydration. You should water your calla lily once a week during the growing season, and reduce watering during the dormant period. However, the frequency of watering may vary depending on the temperature and humidity in your area.
Water Quality
The quality of water you use to water your calla lily can also affect its health. Tap water can contain chlorine and other chemicals that can harm the plant. It is recommended to use filtered or distilled water to water your calla lily. If you don’t have access to filtered or distilled water, you can let tap water sit for a day to allow the chlorine to evaporate before watering your plant.
Fertilization Frequency
Fertilization is important for the growth and health of your calla lily. However, over-fertilization can cause yellow leaves. You should fertilize your calla lily once a month during the growing season and stop fertilizing during the dormant period.
Fertilizer Type
The type of fertilizer you use can also affect the health of your calla lily. A balanced fertilizer with equal amounts of nitrogen, phosphorus, and potassium is recommended. You can also use a fertilizer specifically formulated for flowering plants. Always follow the instructions on the fertilizer package and do not exceed the recommended amount.
By following these watering and fertilization tips, you can help prevent yellow leaves on your calla lily and keep it healthy and vibrant.
Pests and Diseases
Spider Mites
Spider mites are tiny pests that can cause yellow leaves on calla lilies. They are difficult to spot with the naked eye, but you may notice small webs on the underside of the leaves. Spider mites feed on the plant’s sap, which can cause the leaves to turn yellow and eventually fall off. To prevent spider mites, keep your calla lilies well-watered and avoid over-fertilizing. If you do notice spider mites, you can try spraying the plant with a mixture of water and dish soap to control the infestation.
Thrips
Thrips are another common pest that can cause yellow leaves on calla lilies. These tiny insects feed on the plant’s sap, causing the leaves to turn yellow and become distorted. You may also notice black specks on the leaves, which are thrips’ feces. To prevent thrips, keep your calla lilies well-watered and avoid over-fertilizing. If you do notice thrips, you can try spraying the plant with neem oil or insecticidal soap to control the infestation.
Leaf Spot
Leaf spot is a fungal disease that can cause yellow leaves on calla lilies. This disease is characterized by brown or black spots on the leaves, which can eventually cause the leaves to turn yellow and fall off. Leaf spot is caused by wet conditions, so it’s important to avoid over-watering your calla lilies. If you do notice leaf spot, you can try removing the affected leaves and spraying the plant with a fungicide to prevent the disease from spreading.
In summary, yellow leaves on calla lilies can be caused by a variety of pests and diseases, including spider mites, thrips, and leaf spot. By keeping your plants well-watered and avoiding over-fertilizing, you can prevent these issues from occurring. If you do notice signs of pests or diseases, there are a variety of treatments available to help control the infestation and prevent further damage to your calla lilies.
Frequently Asked Questions
My calla lily is yellow and drooping, what’s wrong?
If your calla lily is yellow and drooping, it may be a sign of overwatering, underwatering, or exposure to extreme temperatures. Check the soil moisture level and adjust watering accordingly. Also, make sure your plant is not exposed to direct sunlight or cold drafts.
Should I cut off yellow leaves from calla lily?
Yes, you should cut off yellow leaves from calla lily as soon as possible. This will help your plant conserve energy and focus on healthy growth. Use sharp, clean scissors to make the cut, and be sure to dispose of the yellow leaves properly.
How can you tell if a calla lily is overwatered?
You can tell if a calla lily is overwatered by checking the soil moisture level and the condition of the leaves. Overwatered calla lilies may have yellow, drooping leaves and a mushy, waterlogged soil. To prevent overwatering, make sure the soil is well-draining and water your plant only when the top inch of soil is dry to the touch.
How often should you water a calla lily?
You should water a calla lily once a week, or when the top inch of soil is dry to the touch. Avoid overwatering, as this can lead to root rot and other plant problems. Also, make sure your plant is not exposed to direct sunlight or cold drafts, as this can affect its water needs.
