How to identify and control anthracnose in Phalaenopsis orchids?

For a flower lover who deeply adores Phalaenopsis orchids, the most feared thing is the threat of pests and diseases during their growth. Today let's talk about the new Phalaenopsis orchid virus, "anthracnose."

Anthracnose is characterized by being pitch-black, looking as if it has been scorched by fire - perhaps that is why its name contains the character for "charcoal." Another characteristic is that the lesions take on a circular, ring-upon-ring shape. If the rot later becomes especially severe, it may even rot right through the entire leaf in the middle.
Anthracnose is caused by a fungus named Colletotrichum gloeosporioides. The main cause of the disease is being kept long-term in a place without ventilation, or in a place with high temperature and high humidity, which triggers the anthracnose pathogen. Therefore it is also considered a common disease. The best way to deal with it is not to spray chemicals, because generally spraying chemicals requires mixing with water or using a spray method, and once the water mist forms and cannot be dried off in time through ventilation, it will instead cause other lesions. Therefore, the best approach is to directly cut off the leaves that have been infected by the pathogen, because once anthracnose has formed it is basically impossible to recover. Only by cutting them off can you better avoid it infecting other healthy leaves. Moreover, when throwing them away, you must absolutely not throw them near the flower pot; throw them far away, preferably into kitchen food waste, and dispose of them the same day.

In addition, regarding Phalaenopsis orchids having anthracnose, everyone need not worry excessively. Although this disease is highly contagious, unlike soft rot it will not rot the entire plant all at once. At most it will produce a black lump on the leaf and will not immediately affect the plant's life. As long as flower lovers discover it in time and cut it off in time, it can basically be resolved.

Overall, although Phalaenopsis orchids like a humid environment, they cannot be watered excessively or placed in a space with overly high air humidity, nor can they be placed in a place with poor ventilation. In addition, you also need to be careful not to apply too much nitrogen fertilizer, because this will reduce the Phalaenopsis orchid's resistance. After confirming that the plant has a wound, cut it off in time to avoid spread.