What medicine to use for orchid stem rot

Orchid stem rot

Causes of stem rot

Orchid stem rot, also known as wilt disease and wilt disease, can be called orchid stem rot as long as it causes the rot of orchid pseudobulbs. The peak period of the disease is from May to September each year. Today, the editor mainly talks about stem rot caused by fungi, but no matter what the cause is, most of them are caused by high temperature, high humidity and lack of ventilation.

Symptoms of stem rot

The main symptoms are that the orchid leaves begin to turn yellow from the base, and will wither and die within a day or two. The leaves will break if you touch them with your hands, and the disease will develop quickly and become serious.

At the same time, the surface of its root system is still intact, but the inside has been infected and turned brown, or even rotted. Therefore, the occurrence of stem rot has a great impact on orchids.

Prevention and Control of Orchid Stem Rot

For orchid stem rot, the most important thing is prevention, followed by remedial treatment.

Prevention of stem rot

Summer and autumn are the most prone seasons for disease. The climate is hot, rainy and humid, and orchids are extremely susceptible to infection by bacteria. Therefore, you should open windows more often to ventilate and ensure air circulation. Do not keep the potting soil too wet and use more organic fertilizer.

In addition, sterilization and disinfection should be carried out frequently. Starting from May, you can spray the entire orchid and the surrounding environment with special fungicides such as carbendazim and Bacterial Toxin Clear every week. It is mainly used for sterilization of the surrounding areas, and less is needed on the leaves.

Treatment of stem rot

For orchids that have been infected with stem rot, you should first take out the entire pot of orchids and wash it. Then cut off all the diseased plants and repair the rotten parts with a blade.

Soak the orchid in the sterilizing agent for at least one hour. Then place in a cool place to dry.

Then mix the metalaxyl mancozeb into a paste, apply it on the stems of the orchid, and dry it in the sun.

Finally, you can wrap the orchid's pseudobulb with sterilized aquatic plants and replant it in a new pot and soil.

Note: Do not water immediately after replanting, and do not expose it to the sun. Place it alone in a ventilated place. After three days, you can use streptomycin mixed with clean water to water it thoroughly. After that, soak the whole plant in sterilizer every month.

Fighting against orchid stem rot is a long and arduous task. Flower lovers, you need to work harder!