Root rot is a kind of disease that has strong killing power to imperial flowers. It's caused by root rot. Warm and humid climate conditions, especially in summer, are conducive to the occurrence of this disease, which may cause sudden death of any tree age plants, or yellowing and slow growth. Plants may wilt when the soil is wet. &Nbsp; >
Root rot is generally caused by the root rot fungi brought from the soil. Therefore, when breeding, we must first disinfect the soil, starting from the source.
Once the plant is infected, it must be sterilized continuously according to the symptoms, or contact the local plant protection experts for maintenance.
The monarch flower suffered from leaf spot disease. There were oval and long strip light reddish brown spots on the leaves. There was a green circle around it, and then it expanded into irregular large patches, with black spots on the spots.
Remove the diseased leaves in time and spray chemicals in time. Spray with 50% tobuzin WP 500 times.
The leaf spot of imperial flower is well controlled. After cutting off the diseased leaves, spraying chemicals can prevent and control it. But we must deal with it in time. We can't take measures until the disease covers 50% of the leaves. It's too late to repent.
The root rot and leaf spot of imperial flower are easy to appear in summer, so the maintenance measures in summer must be in place. Strengthen ventilation treatment, keep the growth environment cool and comfortable, check more plants, and carry out necessary sterilization and disinfection treatment.
