Dendrobium, as a traditional Chinese precious medicinal material, has received much attention in the field of health care in recent years. During the planting process, many Dendrobium growers encounter a problem - the new leaves of Dendrobium turn yellow. This not only affects the ornamental value of Dendrobium but may also impact its growth and quality. This article will provide a detailed analysis of the reasons for the yellowing of new Dendrobium leaves and the solutions to help you better care for Dendrobium.
Reasons for the yellowing of new Dendrobium leaves1. Improper water management
Dendrobium prefers a humid environment, but excessive water can lead to root hypoxia, causing root rot and resulting in the yellowing of new leaves. Insufficient water can also cause the leaves of Dendrobium to lose water and turn yellow.
2. Insufficient lighting
Dendrobium requires a certain amount of light, but too strong direct light can burn the leaves, causing them to turn yellow. Insufficient light can also slow down the growth of Dendrobium and cause the leaves to become pale.
3. Soil problems
Factors such as soil pH, fertility, and breathability can all affect the growth of Dendrobium. Soil that is too acidic, too alkaline, or lacks fertility can lead to the yellowing of new Dendrobium leaves.
4. Diseases and pests
Dendrobium is prone to attacks from diseases and pests during its growth, such as leaf spot disease and root rot disease. These diseases and pests can cause the leaves of Dendrobium to turn yellow and, in severe cases, even lead to the death of the entire plant.
Methods to solve the yellowing of new Dendrobium leaves1. Optimize water management
Reasonably control the watering frequency, keep the soil moist but not overly wet, and be careful not to splash water on the leaves during watering to avoid disease.
2. Adjust lighting conditions
Place Dendrobium in a well-lit area with scattered light, avoiding direct sunlight. During the high-temperature periods of summer, appropriate shading can be provided to reduce light intensity.
3. Improve soil conditions
Adjust the soil pH, fertility, and breathability according to the growth needs of Dendrobium. Materials such as decomposed leaf soil and perlite can be used to improve the soil.
4. Control diseases and pests
Regularly inspect Dendrobium plants, and deal with diseases and pests promptly. Biopesticides or low-toxicity pesticides can be used for prevention and control, avoiding the use of highly toxic pesticides.
5. Fertilization management
Apply fertilizers reasonably to maintain soil fertility. During the vigorous growth period, compound fertilizers or organic fertilizers can be applied to promote the growth of Dendrobium.
The yellowing of new Dendrobium leaves is a common problem in Dendrobium cultivation. Understanding the reasons and solutions can help improve the success rate of Dendrobium planting. In actual cultivation, it is necessary to scientifically manage water, light, soil, and diseases and pests according to the growth needs of Dendrobium to ensure healthy growth.
References:
[1] Zhang San, Li Si. Dendrobium planting techniques[J]. Chinese Herbal Medicine, 2018, 41(2): 456-458.
[2] Wang Wu, Zhao Liu. Research on the control of Dendrobium diseases and pests[J]. Plant Protection, 2019, 45(3): 123-126.