Kalanchoe, as a popular indoor ornamental plant in recent years, is favored for its long blooming period and high ornamental value. Many plant enthusiasts encounter the issue of spotted leaves on Kalanchoe during the maintenance process. This article will thoroughly analyze the reasons for spotted leaves on Kalanchoe and provide corresponding prevention methods.
Reasons for spotted leaves on Kalanchoe1. Disease infection
The most common reason for spotted leaves on Kalanchoe is disease infection. Common diseases include leaf spot disease, powdery mildew, and gray mold, which can cause spots and lesions on the leaves, and in severe cases, lead to leaf withering and falling off.
2. Pest attack
Pest infestation is also one of the reasons for spotted leaves on Kalanchoe. Common pests include aphids, red spiders, and scale insects, which absorb the nutrients of the plant and cause spots and withering of the leaves.
3. Improper maintenance
Improper maintenance is also a reason for spotted leaves on Kalanchoe. Issues like excessive watering, insufficient light, and improper fertilization can lead to spotted leaves.
Prevention methods for Kalanchoe leaf spots1. Disease prevention
(1) Timely removal of diseased leaves: Diseased leaves should be promptly cut off and incinerated to prevent the spread of the disease.
(2) Spraying pesticides: Pesticides such as carbendazim and thiophanate-methyl can be used for spraying, with one application every 7-10 days, for a total of 2-3 times.
2. Pest prevention
(1) Physical control: Regularly inspect the plant and remove pests promptly using a brush or soapy water.
(2) Biological control: Utilize predatory enemies like predatory mites and parasitic wasps to control pests.
3. Maintenance adjustment
(1) Reasonable watering: Keep the soil moist and avoid waterlogging to prevent root rot.
(2) Sufficient light: Place Kalanchoe in a sunny location and avoid prolonged exposure to dark environments.
(3) Scientific fertilization: Apply nitrogen, phosphorus, potassium, and other fertilizers according to the growth stage of Kalanchoe, avoiding excessive fertilization.
There are many reasons for spotted leaves on Kalanchoe. Understanding the reasons and taking corresponding preventive measures can ensure the healthy growth of Kalanchoe. It is hoped that this article can assist plant enthusiasts in making their Kalanchoe grow strong and vigorous.