1、 Anthrax

Phalaenopsis infected with anthrax is mostly caused by too humid environment and poor ventilation. Once infected, there will be small spots on the leaves, which will gradually expand into dark brown or yellowish brown spots in the later stage. After discovery, timely treatment, more ventilation, strengthen fertilizer and water management, improve growth environment and disease resistance. In addition, the drug should be sprayed with mancozeb. Once a week, spraying two or three times can be effective

2、 Botrytis cinerea

During the management period, the environmental temperature of the plant is too low and too wet, which is easy to be infected with gray mold, and the flowers are easy to be damaged when it comes to disease. At the initial stage, the flowers and sepals are easy to have water stain like spots, and at the later stage, the spots will expand into circular patches, and flowers will fall in serious cases. Find more ventilation and let it bask in the sun. Also cut off the diseased flowers to avoid infection. In the later stage, spray sukeling once every ten days and take effect two or three times

3、 Soft rot

This disease mostly occurs in high temperature and humid environment, endangering the leaves of plants. There will be transparent spots on the leaves. In the later stage, the leaves will rot, causing great harm and rapid infection. It should be treated as soon as possible. Water should be controlled and sprayed for treatment. The drug can be used with either tujite or polyactinomycin. Spray it once every ten days, and it can be controlled two or three times

4、 Brown spot

Brown spot disease also occurs in the season of high temperature and high humidity. When it occurs, there will be brown irregular spots on the leaves, which will cause great damage to the seedlings. In serious cases, the leaves of old plants will also turn yellow and dry. During the treatment, we should also spray polyclonal antibiotics once every ten days, which can be controlled by spraying two or three times