Pest and disease control of rudbeckia

Rudbeckia is a green plant with a particularly high ornamental value. It has bright colors and attractive fragrance. It can be made into potted plants and placed indoors or cultivated on a large scale. However, Rudbeckia often suffers from some diseases during the cultivation process. Many people do not know how to prevent and control them, which will cause the cultivated Rudbeckia to die. Today, the editor will tell you how to prevent diseases and pests in the cultivation of Rudbeckia. Those of you who like to cultivate Rudbeckia can focus on understanding it.

1. Prevention and control of Rudbeckia leaf spot

Leaf spot disease is a common disease of Rudbeckia. During the normal breeding period, people often find a large number of yellow spots on the leaves of Rudbeckia. This is when Rudbeckia has leaf spot disease. It is necessary to spray it with 10% antibacterial acetic acid solution in time. The medication should be used once every three days, which can quickly improve the symptoms of leaf spot disease.

2. Prevention and control of coneflower aphids

Aphids are one of the most common pests of Rudbeckia, and they mostly appear around April. After that, people can spray it with two thousand times the drug pyrethroid, which can effectively prevent the occurrence of aphids. In addition, after Rudbeckia is infected with aphids, you can also spray it with pyrethroid in time to quickly eliminate the aphids on the surface of Rudbeckia.

3. Prevention and treatment of rudbeckia root rot

Root rot is a common disease of coneflower. If you want to reduce the occurrence of this disease, you can adjust the soil acidity. You can add some sulfur powder to the soil where coneflower is grown, or you can add appropriate amount of ferrous sulfate to the soil. After adding them, they can adjust the acid-base balance of the soil and effectively reduce the occurrence of coneflower root rot.