What are the main diseases and insect pests of orchids

1) White silk disease: it mostly occurs in the plum rain season. Should pay attention to ventilation and light, basin soil drainage is good to prevent, after the disease can be removed with bacteria basin soil, sprinkled with pentachloronitrobenzene powder or lime can be.

(2) anthrax: it occurs all the year round, especially in the high temperature and rainy season. In addition to improving environmental conditions, during the onset period, 50% methyl topiramate wettable powder 800-1500 times solution can be sprayed for 7-10 days, and then supplemented with 1% equal volume Bordeaux solution, once every semimonthly.