Phalaenopsis Anthracnose Symptoms and Analysis of Causes of Rotten Leaves

For an orchid enthusiast who absolutely loves Phalaenopsis, the most troublesome thing is undoubtedly the pest and disease problems encountered during its growth. Among them, the most difficult virus to deal with in Phalaenopsis is of course "anthracnose." How does it develop? And how should it be handled once it occurs?

First, let's talk about this anthracnose. After being infected with this disease, the characteristic is that the leaves turn pitch black, as if they have been burned by fire. This is probably also the reason why its disease name contains the character "charcoal" (tan). If you observe carefully, the lesions are in ring after ring, somewhat circular in shape, and when the condition is severe, a hole rots through the middle of the leaf. During care, if you find these symptoms, you must intervene and deal with it quickly, otherwise the entire plant will die.

So how is anthracnose formed? It is a disease caused by a fungus called Colletotrichum gloeosporioides. The main triggers for cultivating this pathogen are usually leaving Phalaenopsis in an unventilated place for a long time, or a care environment that is both hot and humid. This fungus is not a new disease; it is a common one in flower growing.

Generally speaking, when flower enthusiasts see such a situation, they may think of using medication, but for this anthracnose, medication really is not the best approach. Because medication generally has to be diluted with water and sprayed with a sprayer, this operation may cause the water mist to be unable to dissipate on its own after spraying, which then creates other lesions. So what should be done? The best method is to directly cut off the leaves infected by the pathogen. Because once a plant gets anthracnose, it basically cannot recover. Cutting off the diseased leaves when discovered can effectively prevent it from spreading to other healthy leaves.

Also note that when throwing away diseased leaves, never throw them beside the flower pot. They must be put in kitchen food waste and disposed of the same day. Only in this way can other flowers and plants be completely prevented from being infected by the pathogen.

In addition, after Phalaenopsis gets anthracnose, everyone does not need to panic too much! Although this disease spreads quickly, it is different from soft rot. With soft rot, the flowers rot away very quickly after infection, but anthracnose at most grows a black lump on the leaves and will not immediately kill the Phalaenopsis. As long as it is handled properly right away afterward, the problem can basically be solved.