Causes of blackening of wintersweet leaves in summer. Prevention and control measures for blackening of wintersweet leaves in summer. As a traditional ornamental plant in our country, wintersweet flowers are deeply loved by people for their elegant flower appearance and faint fragrance. In the hot summer, many wintersweet flowers However, the leaves appear blackening, which not only affects the beauty of the plant, but may also threaten its healthy growth. This article will explain the reasons for blackening of wintersweet leaves in summer and provide corresponding prevention and control measures. Reasons why wintersweet leaves turn black in summer 1. Climate factors High temperature and humid climate conditions in summer can easily lead to blackening of wintersweet leaves. High temperature will accelerate plant transpiration and cause plant water loss, while humid environment can easily cause disease.
2. Soil problems The soil has accumulated water and poor air permeability, which leads to hypoxia in the roots and affects the normal growth of wintersweet flowers. Excessive salt in the soil or inappropriate pH value can also cause the leaves to turn black.
3. Pest and insect pests invade wintersweet flowers and black leaves in summer, which may also be caused by the invasion of pests and insect pests. Common diseases include anthrax, leaf spot, etc., while pests include aphids, red spiders, etc.
4. Improper fertilization Excessive fertilization or improper fertilization will damage the roots of wintersweet flowers, affect their normal absorption of nutrients, and lead to blackening of leaves. Prevention and control measures for blackening leaves in summer 1. Properly prune and prune sick branches in time to remove leaves with serious pests and diseases to reduce the spread of pests and diseases.
2. Improve the soil environment and strengthen soil management, ensure good soil drainage, and appropriately increase air permeability. Use organic fertilizers, decomposed chicken manure, etc. to improve the soil structure.
3. Control the high temperature and humidity of water in summer. Avoid too much watering to avoid causing water accumulation in the soil. Increase the amount of watering appropriately to keep the soil moist.
4. Prevention and control of pests and diseases. For pests and diseases, biopesticides and high-efficiency and low-toxicity pesticides can be used to control pests and diseases, strengthen pest monitoring, and deal with pests and diseases discovered in a timely manner.
5. Reasonable fertilization According to the growth needs of wintersweet flowers, reasonable fertilizer should be applied. When fertilizing, attention should be paid to controlling the amount of nitrogen fertilizer to avoid excessive fertilization.
The blackening of wintersweet leaves in summer is the result of the joint action of multiple factors. Understanding the reasons and adopting corresponding prevention and control measures will help protect the healthy growth of wintersweet flowers. I hope this article can provide useful reference for the majority of wintersweet lovers.