The most common orchid diseases include leaf virosis, bacterial soft rot, leaf blotch and gray mold.In case of symptoms of virosis, immediately remove the infected plant, because it can be a source of infection for neighboring he althy orchidsYellowish spots of various shapes and sizes appear on the leaves of the infected plants, and as they develop diseases, leaves turn yellow and dry.
However, when dark brown, watery spots appear on the leaves, it may be symptoms of soft rot, which is caused by bacteria of the genus Pectobacterium. The leaf tissue above the spots turns yellow at first and then dries up.As soon as we notice the first symptoms of infection, remove the affected leaves. In addition to viruses and bacteria, orchids can also be infected by fungi.
If the leaves develop regular, dark, usually oval-shaped spots, it is most likely a symptom of leaf spot caused by several species of fungi.As soon as the first symptoms are noticed, remove the infected leaves or spray the plant with one of the preparations registered for fighting gray mold.
Gray mold of Botrytis cinerea is one of the most dangerous diseases of ornamental plants.Its development is favored by high air humidity.Therefore, in order to prevent the occurrence of gray mold on orchids, avoid overflow of plants and wetting leaves and flowers during watering.
Symptoms of this disease also appear on flowers.Dark spots appear on the petals, covered with a gray dusty coating of the spores of the stems.The best solution in such a situation is to immediately remove the infected flowers.
See also:How to care for orchids ->>
