Kalanchoe, as a popular variety in the houseplant market in recent years, is loved by many gardening enthusiasts for its long flowering period, rich flower colors, and auspicious meaning. In the process of care, the problem of black spots in the middle of Kalanchoe leaves often troubles gardening enthusiasts. This article will address this issue, analyze the reasons for black spots in the middle of Kalanchoe leaves, and provide corresponding solutions.
Reasons for Black Spots in the Middle of Kalanchoe Leaves1. Disease Infection
Black spots in the middle of Kalanchoe leaves may be caused by disease infection. Common diseases include black spot disease and anthracnose. These diseases are mostly caused by pathogens and can be transmitted through air, soil, and water.
2. Improper Fertilization
Excessive application of fertilizer, especially nitrogen fertilizer, will lead to black spots in the middle of Kalanchoe leaves. This is because too much nitrogen fertilizer causes the plant to grow too vigorously, which affects photosynthesis and leads to leaf blackening.
3. Insufficient Light
Kalanchoe prefers a well-lit environment. If it is kept in a dark and humid environment for a long time, it is easy to cause black spots in the middle of the leaves. This is because insufficient light affects the normal growth of the plant, causing the leaves to become diseased.
4. Improper Watering
Both overwatering and underwatering can lead to black spots in the middle of Kalanchoe leaves. Overwatering can cause waterlogging in the soil, leading to root hypoxia, which in turn affects the normal growth of the leaves. Underwatering will cause the plant to lack water, and the leaves will turn black from dehydration.
Solutions for Black Spots in the Middle of Kalanchoe Leaves1. For Disease Infection
After discovering a disease, diseased leaves should be promptly removed, and fungicides should be used for control. Maintain indoor ventilation to prevent the spread of the disease.
2. Adjust Fertilization
Apply fertilizer reasonably, avoid excessive use of nitrogen fertilizer. During the vigorous growth period, phosphorus and potassium fertilizers can be appropriately increased to promote plant growth.
3. Appropriately Increase Light
Place the Kalanchoe in a well-lit environment, and avoid keeping it in a dark and humid environment for a long time. If conditions permit, artificial light can be used to supplement light.
4. Water Reasonably
Water reasonably according to the growth habits of Kalanchoe. Avoid waterlogging when watering and keep the soil moist. In high summer temperatures, the frequency of watering can be appropriately increased.
There are many reasons for black spots in the middle of Kalanchoe leaves, but as long as we understand the causes and take corresponding solutions, we can effectively avoid this problem. It is hoped that this article can help fellow gardening enthusiasts and allow your Kalanchoe to grow strong and healthy.