What to do when the leaves of the camphor tree turn yellow and crisp
Let me tell you about how to deal with the yellowing and crispy leaves of camphor trees and some simple treatment methods related to plant cultivation. Let's learn about it together.
The camphor tree is an evergreen tree of the Lauraceae family, known for its graceful shape, evergreen foliage, and good绿化 effect, widely used in urban street trees and courtyard greening, and has become an important species for urban and rural greening in the Yangtze River Valley and surrounding areas. However, camphor trees prefer slightly acidic soil. In recent years, due to the alkaline soil in the Shanghai area, combined with less application of organic fertilizers and improper maintenance management, the yellowing disease in camphor trees has become increasingly serious.
In the early stage of yellowing disease in camphor trees, the new leaves at the tips of the branches show interveinal chlorosis and yellowing, but the veins, especially the main veins, remain green, with a very obvious alternation of yellow and green. As the yellowing progresses, the leaves turn from green to yellow, become thinner, have milky white spots on the leaf surface, and the veins lose their green color, appearing very light green. Subsequently, the whole leaf turns white, parts of the leaf die, the leaf edges become crispy, and the leaves fall off; in severe cases, the branch tips die, and the entire plant may die. The yellowing disease often starts at the top of the camphor tree, with new leaves being more severely affected than old leaves, and winter and spring being more severe than summer. The main cause of yellowing disease in camphor trees is iron deficiency, and affected trees should be treated promptly, otherwise they will slowly die. The main methods are as follows:
1. Water the roots with a 2% ferrous sulfate solution once a week for 4-5 times.
2. Drill several holes in the bark of the tree, about 1.2-1.5 centimeters deep, and then inject a mixture of 15 grams of ferrous sulfate, 50 grams of urea, 5 grams of magnesium sulfate, and 1000 milliliters of water using a manual tree trunk injector. This method shows quick results.
3. Spray 0.1%-0.2% ferrous sulfate solution on the leaf surface, or spray 500-1000 mg/L of ferric urea or fulvic acid iron, citric acid iron, etc., which also has a good effect on restoring green color.
4. Apply acidic soil and organic fertilizers according to local conditions to improve the growing conditions.
The above introduction on how to deal with the yellowing and crispy leaves of camphor trees and some simple treatment methods for yellow leaves in green plants and flowers may be helpful to you in life!