The treatment is:

1, remove the crabapple orchid from the pot, remove its rotting part,

2, place it in a cool and ventilated place for 1~2 days,

3, replant it in a yellow sand pot. Place it in a ventilated and shaded area, don't water it at first after 5 days, water a little, keep the soil moist, check if new roots grow after 10 days.

In addition, the crabapple orchid likes warm and humid semi-shady environment, and is not cold hardy, winter is best to move indoors, the minimum temperature can not be lower than 10 ℃, and its optimal temperature during the growth period is 20 ~ 25 ℃. It prefers loose, organic matter-rich, well-drained and breathable substrate.

Extended information:

p>Crab claw orchid pest control

1, disease control

Crab claw orchid disease is easy to occur in high temperature and high humidity, mainly anthracnose, rot and leaf blight and so on. Prevention and control methods: the early stage of disease, with 50% carbendazim wettable powder 500 times liquid, every 10-15d spray 1 time, **** spray 3 times. The onset of severe. The plants that occur seriously should be pulled out and centralized and burned.

2, insect pest control

In case of serious damage, the surface of leafy stems is covered with white shells, which makes the plant grow weak and the damaged part is yellowish-white, if the damaged plant is light, it can be scraped with bamboo slice, and when it is serious, it can be sprayed with 25% imidacloprid emulsion 800 times. When red spider damage occurs, spray 1000-1500 times of oxidized lecithin liquid to prevent and control.

Source : Baidu Encyclopedia--Crabapple Orchid