What to do with dark spots on the leaf surface of orchids?Master the treatment methods to bring orchids back to life
The orchid is an elegant plant, and its beautiful flowers and unique leaf shapes give people unlimited imagination and appreciation value. However, sometimes there are dark spots on the leaves of orchids, which not only affect the ornamental value of the orchid, but also can threaten the health of the plant. This article will take a closer look at how to deal with dark spots on the leaves of orchids to help you bring your orchids back to life.
First of all, it is necessary to clarify the ** of dark spots on the leaf surface of orchids. There are many reasons for the dark spots on the leaf surface of orchids, mainly including the following aspects:
Caused by diseases: When orchids are infected with certain diseases, dark spots appear on their leaves. Common diseases include anthracnose, brown spot and so on. These diseases can cause local necrosis of the leaves, resulting in the formation of dark spots.
Caused by insect pests: Some pests such as aphids and red spiders can attack the leaves of orchids, causing leaf damage and forming black spots.
Environmental discomfort: Orchids are demanding on the environment, and dark spots may appear on the leaves due to excessive dryness and wetness, lack of light or contaminated environment.
Improper fertilization: Over-fertilization or application of unripe fertilizers can cause yellowing, wilting, and even dark spots on orchid leaves.
For different **, take the corresponding treatment methods as follows:
For dark spots caused by the disease, the following measures can be taken:
1) Strengthen ventilation: Move the orchid to a well-ventilated environment to reduce humidity and reduce the occurrence and spread of diseases.
2) Reasonable light: Give orchids suitable light and avoid direct sunlight to enhance the disease resistance of plants.
3) Timely pruning: Diseased leaves are found to be pruned in time to reduce the spread of diseases.
4) Drug**: In the case of serious disease, the corresponding agent can be sprayed for prevention and control. But be careful to use the right concentration and frequency to avoid causing harm to the orchid.
For dark spots caused by insect infestations, the following measures can be taken:
1) Strengthen observation: pay close attention to the growth status of orchids, and find and deal with pests in time.
2) Physical control: use physical methods such as yellow plate and blue plate to trap and kill insects.
3) Drug**: When the number of pests is large, the corresponding agent can be used for spraying control. But be careful to use the right concentration and frequency to avoid causing harm to the orchid.
For dark spots caused by environmental discomfort, the following measures can be taken:
1) Adjust the light: According to the growth needs of the orchid, adjust the light time and intensity reasonably. Avoid light that is too strong or too weak.
2) Control humidity: Keep the humidity of the orchid growth environment moderate, and avoid over-drying and over-wetting.
3) Reduce pollution: Try to avoid orchid pollution, such as air pollution, soil pollution, etc.
For dark spots caused by improper fertilization, the following measures can be taken:
1) Reasonable fertilization: According to the growth stage and needs of orchids, appropriate fertilization. Avoid over-fertilizing or applying unrotted fertilizers.
2) Watering control: Proper watering after fertilization to promote the absorption and metabolism of fertilizer.
In addition to taking corresponding treatment methods for different **, comprehensive conservation management should also be paid attention to prevent the occurrence and spread of black spots on the foliage of orchids. Here are some suggestions:
Regular inspection: Regularly check the growth status of orchids, and deal with abnormal conditions in time.
Scientific watering: Master scientific watering methods to keep the soil moderately moist. Avoid overwatering or underwatering.
Balanced fertilization: Choose a fertilizer suitable for orchids, and follow the instructions for use to fertilize reasonably. Avoid over-fertilizing or applying unrotted fertilizers.
Pruning diseased leaves: Diseased leaves are found to be pruned in time to reduce the spread of disease. At the same time, it is necessary to keep the pruning tools clean and disinfected to avoid cross-infection.