Reasons for the discoloration of azalea leaves. Methods for preventing and controlling the discoloration of azalea leaves. Azalea is known as the "beauty of flowers". It is deeply loved by people because of its beautiful color and long flowering period. During the process of maintaining azalea, you will often encounter the phenomenon of leaf discoloration, which not only affects the ornamental effect, but may also affect the growth of azalea. This article will introduce you in detail the reasons for the discoloration of azalea leaves and the prevention and control methods. Reasons for the color change of azalea leaves 1. Insufficient light: azalea flowers prefer semi-cloudy. If they are exposed to direct light for a long time, it will easily cause the leaves to turn yellow and white.
2. Improper water management: Too much or too little watering will cause the leaves to discolor. Too much watering will cause the roots to rot and the leaves to turn yellow; too little watering will cause the leaves to dry and turn yellow.
3. Soil problems: Excessive acid or alkali soil, poor air permeability, etc. may cause leaves to discolor.
4. Improper fertilizer application: Excessive application of nitrogen fertilizer will cause the leaves to turn green, but they will turn yellow over time; excessive application of phosphorus and potassium fertilizers will cause the leaves to turn white.
5. Pest and insect pests: Pest and red spider pests can also cause leaves to change color. Prevention and control methods of discoloration of azalea leaves 1. Adjust the light: Place the azalea in a semi-shaded place to avoid direct strong light.
2. Watering timely: Watering timely according to the soil moisture to keep the soil moist but not wet.
3. Improve soil: Choose soil with good air permeability, such as legular soil, sandy soil, etc., and regularly apply organic fertilizers to improve soil fertility.
4. Reasonable fertilization: Reasonably apply nitrogen, phosphorus and potassium fertilizer according to the growth stage and needs of rhododendrons to avoid excessive application.
5. Prevention and control of pests and diseases: Regularly inspect rhododendrons and control pests and diseases found in a timely manner. Pesticides with low toxicity and low residue can be used. Treatment methods after rhododendron leaves change color 1. Timely pruning: After discovering that the leaves change color, cut off the sick leaves in time to avoid the spread of the disease.
2. Clean environment: Keep the surrounding environment clean to avoid the breeding of pests and diseases.
3. Strengthen maintenance: Strengthen the management of light, moisture, soil and other aspects to improve the disease resistance of rhododendrons.
Discoloration of azalea leaves is a common problem. Understanding the causes and prevention methods will help us better maintain azalea. In daily life, we must pay attention to the growth of azalea, solve problems when discovered, and let azalea bloom beautiful flowers.