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What diseases and insect pests do Gentiana grandiflora have and how to control them

Jesse Pinkman
2020-01-17 12:53:42
The main diseases of Clivia grandiflora are white silk disease, soft rot, anthrax, etc., which mainly focus on prevention and strengthen ventilation. If the disease has occurred, it is necessary to cut off the diseased part and replace it with new basin soil and sprinkle lime. Scale insects are one of the most common pests, which can cause yellow leaves to fall. If the quantity is small, it can be removed by hand first. If the quantity starts to spread, it can be treated by spraying pesticide.

I. diseases

1. Erysipelas: erysipelas is a common disease of Clivia grandiflora, which mainly occurs at the base of leaves and the lower part of fleshy stems. At the beginning, there will be yellow brown water stains, then turn into red brown wet rot, and white hyphae will grow on it, and then it will extend around, and in the later stage, it will be very serious, which may cause the plants to wilt or even die.

Clivia miniata

2. Soft rot: generally, it occurs in the lower layer of the leaf sheath. At the beginning, the leaves have small yellow spots, and at the later stage, the spots become brown together.

3. Anthrax: it is mainly caused by bacteria and is most easily obtained in summer, mainly growing at the tip of the leaves.

II. Pest

Scale insects are one of the most common pests, they will lie on the leaves and suck juice, causing the leaves to turn yellow and fall.

Clivia miniata

III. how to prevent

1. Disease: for disease, prevention is the main way, ventilation and air circulation can greatly reduce the possibility of disease. If the disease has already appeared, it is necessary to cut off the diseased part, then replace the new basin soil, and sprinkle lime for disinfection.

2. Insect pest: if the quantity is small, it can be removed by hand first. If the quantity starts to spread, it can be treated by spraying pesticide.

Magnolia grandiflora

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