Disease prevention and control methods for growing orchids at home

How can diseases of potted orchids at home be prevented and controlled? The author believes the following measures can be taken:

Strengthen cultivation and care. Orchids need an environment with good ventilation and air permeability, smooth drainage, and moderate light. Taking home potted orchids as an example, the orchid pot chosen should have a large space at the bottom, good air permeability, and no water accumulation; the soil for growing orchids is best made by mixing pond mud with fired soil, slightly acidic; when the orchid plant is moved into the pot, it should be placed in a spot with good ventilation and moderate light, to reduce and prevent the occurrence of orchid diseases. When watering orchids, water control should be carried out differently according to the seasons, so as to keep the soil in the orchid pot slightly moist, but water accumulation must be avoided.

Choose good varieties and reduce sources of infection. There are many orchid varieties, and their disease resistance differs greatly. Choosing good varieties and cultivating strong seedlings to reduce the spread of disease sources is an effective way to prevent and control orchid diseases.

Fertilize reasonably and supplement nutrients in good time. Fertilizing home potted orchids should follow the principle of "better to lack than to overdo, better to dilute than to concentrate", and fertilizer should be applied at the appropriate time of year. When fertilizing orchids, avoid both insufficient fertilization and excessive fertilization.

Promptly remove diseased leaves and diseased plants, and combine prevention with treatment. Whenever leaf spot diseases such as black spot, anthracnose, and southern blight are found on orchid leaves, they should be promptly cut off and burned or deeply buried. If rotten orchid plants are found, they should also be removed and disposed of. In addition, every 10 days, spray the orchid leaves with equal-amount Bordeaux mixture or pesticides such as Miebingwei or carbendazim, or with water soaked from plant ash, spraying continuously 2 to 3 times, which has a fairly good effect on preventing orchid diseases.