Causes of the yellowing of crape myrtle leaves The method of solving the yellowing of crape myrtle leaves. As a common ornamental plant, crape myrtle is deeply loved by people for its beautiful tree appearance and gorgeous flowers. Recently, many flower friends have reported that their crape myrtle leaves have yellowed in hair curls. What should I do? This article will provide you with a detailed analysis of the reasons for yellowing of crape myrtle leaves and hair curls, and provide corresponding solutions to help your crape myrtle regain its vitality. Reasons for the yellowing of crape myrtle leaves 1. Improper water management Crape myrtle is sensitive to the demand for water. Too much or too little water may cause the yellowing of the leaves. Too much watering will cause water in the soil and lack of oxygen in the roots, affecting plant growth; if too little watering will cause the leaves to be dehydrated, resulting in yellowing.
2. Improper application of fertilizer will also cause the leaves of crape myrtle to curl and yellowing. Excessive application of nitrogen fertilizer will cause the plants to grow too vigorously and the leaves become thick, resulting in yellowing of the leaves; lack of necessary nutrients, such as iron, zinc, etc., can also cause the leaves to yellowing.
3. Pests and insect pests infest the leaves of crape myrtle and yellowing may also be caused by insect pests and insect pests. Common pests and diseases include aphids, red spiders, leaf spot diseases, etc. These pests and diseases will invade the leaves of crape myrtle, causing yellowing and curling leaves.
4. Crape myrtle likes a sunny environment with insufficient light. If it is in a dark environment for a long time, the leaves are prone to yellowing. Methods to solve the problem of curling and yellowing of crape myrtle leaves 1. Adjust the watering frequency According to the growth habits and climatic conditions of crape myrtle, reasonably arrange the watering time. Under normal circumstances, water 1-2 times a week in spring and autumn, and appropriately reduce the watering frequency in summer and winter.
2. Reasonable fertilization According to the growth stage and soil nutrient status of crape myrtle, select appropriate fertilizers. During the vigorous growth period, the application amount of nitrogen fertilizer can be appropriately increased to promote plant growth; during the flowering period, increase the application amount of phosphorus and potassium fertilizer to improve flowers Quality, be careful not to overapply fertilizer to avoid causing fertilizer damage.
3. Prevent and control pests and diseases and regularly check the growth status of Lagerstroemia japonica. Once pests and diseases are discovered, control measures must be taken in a timely manner. Physical control, biological control and chemical control methods can be used, such as manually removing diseased leaves and spraying pesticides.
4. Properly increase the light and place the crape myrtle in a sunny place so that it can fully receive sunlight. If it is maintained indoors, the lighting time can be appropriately increased, or artificial light sources can be used to supplement the light.
5. Trim and shaping timely trim off sick and weak branches and overly dense branches to keep the plants ventilated and transparent. After pruning, apply cutting cream in time to prevent the invasion of bacteria.
Through the above methods, I believe that the problem of yellowing of your crape myrtle leaves can be effectively solved. In the process of maintaining crape myrtle, we must pay attention to its growth conditions and manage it rationally to make crape myrtle full of vitality and add a beauty to your home.