What if the leaves of Ivy are blackened?

1. Epidemic disease

Blight is the most likely cause of blackening of its leaves. If we do not know whether this is the cause of this phenomenon, then we can take a look at how the disease occurs. In general, most of the leaves of a plant with the disease turn brown and begin to rot slowly, while the bottom of its stem turns dark green, softens slowly, and then turns brown to black. In addition, the leaves will wither where the disease occurs, and some of the tops will rot and may become dead.

The disease usually occurs when the humidity is high and spreads quickly. So once it is confirmed that it is suffering from the disease, we should pull out the diseased plants in time and increase the interval of watering. In addition, when cutting, we should also pay attention to the selection from the branches without diseases and insect pests, the matrix should also be determined to be sterilized, the cutting should not be too dense, ventilation and light transmission should be determined. We should drain the water in time when it rains, otherwise the disease is easy to happen. At the beginning of the disease, we can consider using drugs such as metalaxyl or Ke Lu to control it.

2. Grey mold

The symptom of this disease is that there are water stains or black spots on the edges of the leaves, and in more serious cases, the disease can affect the whole leaf. The way to treat it is to control watering and fertilization, remove the diseased leaves and treat them with chlorothalonil.