A Detailed Guide to Controlling Diseases of the Chinese Fringe Flower (Loropetalum chinense var. rubrum)
Anthracnose
If diseased leaves are found on the Chinese fringe flower, we should deal with them immediately, destroy the diseased leaves to prevent infection, improve drainage conditions, create a good ventilation environment, and carry out chemical treatment.
Damping-off
We should replace the soil of the Chinese fringe flower and replant it in new soil, disinfect the soil, promptly remove and destroy any diseased plants found so they do not get a chance to infect other plants, and use chemicals for treatment.
Mosaic disease
To control aphids, spray 5% diesel emulsion before bud break to kill overwintering adults and eggs. Spray a second time after the flowers fall, and spray a third time in October in autumn.
Control methods for anthracnose in the Chinese fringe flower
It mainly harms old leaves and basal leaves. Because the leaves themselves are red, the lesions appear as black round spots, or nearly round, causing earlyleaf drop, with severe damage during the rainy season in July-August. The pathogen is Actinonema. The fungus overwinters as mycelium on diseased leaves and is the primary source of infection for the disease the following year.
Control methods:
1. Remove diseased leaves, burn them in a centralized way, and reduce the source of the disease.
2. Improve management, strengthen field drainage, prunePruningappropriately, and improve light and ventilation conditions.
3. Chemical treatment: spray 70% thiophanate-methyl 1000x solution or 75% chlorothalonil 800-1000x solution; zineb 800-1000x solution has a good control effect. If spraying multiple times, it is advisable to alternate products to prevent resistance.
Common diseases of the Chinese fringe flower and their control
Common diseases of the Chinese fringe flower
There are mainly three common diseases of the Chinese fringe flower, namely: anthracnose, damping-off, and mosaic disease.
Anthracnose
The main symptom of anthracnose in the Chinese fringe flower is the appearance of black spots on the leaves. Because the flowers of the Chinese fringe flower are red, the black spots are extremely conspicuous on the red leaf surface. Its main harm is causing leaf drop. The pathogen of anthracnose is Actinonema, and it mainly occurs in May and June each year. The fungus overwinters on diseased leaves, and this also causes the disease the following year.
Damping-off
Damping-off is most severe at the seedling stage, but this disease accompanies the plant throughout its life. It mainly harms the plant at the roots, with dark lesions appearing at the site of infection, and it also takes on a water-soaked appearance, after which the epidermis separates from the xylem, causing the death of the plant.
Mosaic disease
Mosaic disease is a disease caused by a virus, and it makes plant leaves appear mottled white and green.
Control methods for diseases of the Chinese fringe flower
Anthracnose
Once diseased leaves are found, deal with them immediately, destroy the diseased leaves to prevent reinfection, improve drainage conditions, give the plant more sunlight, create a good ventilation environment, and then carry out chemical treatment.
Damping-off
Plant in new soil, change the soil frequently, and disinfect the soil. Promptly remove and destroy any diseased plants found so they do not get a chance to infect other plants, and use chemicals for treatment.
Mosaic disease
Chemical treatment.