Common diseases of king protea and their prevention and treatment methods

Common diseases of King Protea: root rot

Symptoms of King Protea root rot

Root rot is a disease that is highly lethal to the king protea. Caused by root rot fungi. Warm, humid climatic conditions, especially in the summer, favor the disease, which can cause sudden death, yellowing, and slow growth in plants of any age. When the soil is wet, the plant may wilt.

Prevention and control methods of king protea root rot

Root rot is generally caused by root rot fungi brought in from the soil. Therefore, when breeding, it is necessary to disinfect the soil first, starting from the source.

Once the plant is infected, it is necessary to carry out continuous sterilization treatment according to the symptoms, or contact a local plant protection expert for maintenance.

Common diseases of King Protea: leaf spot

Symptoms of Emperor Mosaic Leaf Spot

The king protea suffers from leaf spot disease, with oval and long light reddish-brown spots on the leaves, surrounded by green circles, which later expand into large irregular patches with black spots on them.

Prevention and treatment methods

Remove diseased leaves and spray pesticides in time. It can be sprayed with 500 times diluted 50% thiophanate wettable powder.

The leaf spot disease of the king protea is easy to control. After cutting off the diseased leaves, spraying the pesticide can prevent and control it. However, it must be dealt with in a timely manner. It is too late to regret when the spots have covered 50% of the leaves before taking measures.

Root rot and leaf spot diseases of the king protea are prone to occur in summer, so summer maintenance measures must be in place. Strengthen ventilation, keep the growing environment cool and comfortable, check the plants more often, and carry out necessary sterilization and disinfection.