Diseases and prevention of crab claw orchid, treatment of common diseases

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1. Stem rot

2. Leaf spot disease

3. Precautions

There are two common diseases of crab claw orchid. One is stem rot, which mainly occurs at the base of the stem. In the early stage, there will be brown-green yellow spots, which will turn into dark brown in the later stage. After the onset of the disease, you should spray Zinc to avoid continued infection. The second is leaf spot disease, which mostly starts from the edge of the leaves. There are gray spots in the early stage and turn into dark brown in the later stage. After discovery, diseased leaves should be removed promptly and sprayed. Pay attention to improving the environment in the later period, providing more ventilation and reducing humidity.

1. Stem rot

Symptoms: Stem rot of crab claw infection mostly occurs at the base of the stem. In the early stage of the disease, there will be brown-green yellow spots, and the lesions will be irregular. In the later stages, the lesions will turn dark brown and sunken, and the tissue under the skin will rot and dry up, with black granular matter.

Prevention and treatment methods: During cultivation, the substrate must be disinfected before use to ensure that there are no germs in it. When managing, pay attention to the amount and frequency of watering each time. Do not make the environment too humid. Control the humidity appropriately and prefer dryness to wetness. In addition, in the early stages of the disease, you should spray zinc to prevent further infection.

2. Leaf spot disease

Symptoms: Leaf spot disease mostly starts from the edge of the leaves. The initial stage is gray spots, which are slightly sunken downwards. When it expands in the later stage, the edges will turn dark brown. In the later stage, the lesions will slowly dry up and gray-black mildew spots will appear.

Prevention and treatment methods: Once it is found to be infected with leaf spot, all diseased leaves must be removed promptly to reduce the source of infection. In addition, medication should be used at the early stage of the disease. The drug can be 800 times liquid pentachloronitrobenzene fungicide, or this drug can be applied directly to the leaves.

3. Precautions

If you want to prevent crab claw orchid from being infected with diseases, you must not only disinfect the soil, but also pay attention to management methods. It should be placed in a well-ventilated place, especially in hot summer months. Ensure good ventilation and reduce watering. Do not provide a hot or humid environment, otherwise it will be easy to get infected.

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