Causes of yellowing of crape myrtle leaves in curling leaf edges. Prevention and control methods of yellowing of crape myrtle leaves With the arrival of spring, many flower plants have begun to enter a period of vigorous growth. crape myrtle, as a common ornamental plant, its beautiful posture and bright flowers have been loved by many flower friends. Recently, some flower friends reported that their crape myrtle leaves have become yellowing of curling leaf edges. What is the reason for this? This article will provide you with a detailed analysis of the reasons for the yellowing of crape myrtle leaves and the prevention and control methods. Reasons for curling leaves and yellowing on the edges of the leaves 1. Improper water management Lagerpe crape likes humid environments, but too much water or insufficient watering may cause the leaves to curl and yellowing. If the soil is too dry, Lagerpe crape will curl the leaves to reduce water evaporation; If too much water is watered, it will easily lead to hypoxia in the roots, which will affect the normal growth of the plant.
2. Insufficient light crape myrtle prefers an environment with sufficient light. If it is in a dark and humid place for a long time, the leaves are prone to curling and yellowing. This is because insufficient light prevents the plants from fully photosynthesis, which in turn affects the normal growth of the leaves.
3. Improper fertilizer application and excessive application of nitrogen fertilizer will cause the leaves of crape myrtle to curl and yellowing, because too much nitrogen fertilizer will inhibit the absorption of other nutrients by plants, and application of insufficiently decomposed organic fertilizer may also cause the leaves to yellowing.
4. Invasive by pests and diseases, crape myrtle is susceptible to insect infestation such as aphids and red spiders. These pests will absorb nutrients from plants, causing the leaves to curl and yellow. Crape myrtle may also be affected by diseases such as leaf spot and root rot. Methods to prevent and control yellowing of crape myrtle leaves from curling leaf edges 1. Optimize water management to keep the soil moist and avoid water accumulation. In the high temperature season in summer, the number of watering times can be appropriately reduced to prevent hypoxia in the roots. In the cold winter season, watering should be properly controlled to avoid The soil is too moist.
2. Adjust the lighting conditions and place crape myrtle in a place with sufficient light to avoid being in a dark and humid environment for long periods of time. If it is maintained indoors, it can be moved outdoors regularly to receive sunlight.
3. Reasonable fertilization According to the growth needs of crape myrtle, apply appropriate amounts of nitrogen, phosphorus, potassium and other fertilizers to avoid excessive application of nitrogen fertilizer to avoid affecting the normal growth of plants. When applying organic fertilizers, ensure that they are fully decomposed.
4. Regularly inspect the crape myrtle plants to control pests and diseases. If pests are found to be eliminated in a timely manner, low-toxicity and high-efficiency pesticides can be used for control, such as imidacloprid, avermectin, etc., to strengthen the disease resistance of crape myrtle, such as reasonable pruning, ventilation, etc.
There are many reasons for the curling edges of crape myrtle leaves and yellowing, including improper water management, insufficient light, improper fertilizer application, and pest infestation. In response to these problems, we should take corresponding prevention and control measures to ensure the normal growth of crape myrtle. I hope this article will help you.