Red sorrel is a perennial upright herbaceous plant of the family Oxalaceae. Planting is often done in large areas with numerous small flowers, which are bright and cute. They can be used to arrange flower beds, flower borders, flower bushes, flower clusters and flower stands, etc.

The weather in summer is dry and hot, especially during the high-temperature phase of midsummer from July to August. Sometimes red sorrel is forced into dormancy, its flowers and leaves turn yellow, and its flowering decreases. At this time, you should pay attention to covering up. Provide shade to cool down, prevent exposure to the scorching sun, and enhance ventilation, which can basically avoid obvious dormancy and keep the flowers blooming continuously.

What if the leaves of red sorrel appear dry in summer? Don't take it lightly, and observe carefully whether it is caused by red spider mites. When red sorrel is infested by red spider mites, white spots will first appear on the leaves, and then they will scorch and fall off, which will seriously affect the appearance. Once the harmed area is large, drug prevention and treatment will not work. So what can be done to protect red sorrel from the dangers of spider mites?

1. Prevent in advance

Carefully conduct regular insect observation. Because the red spider mite that harms red sorrel does not have the ability to fly, it can only spread by crawling and using wind. Therefore, its spread gradually expands from point to surface. The initial damage speed is limited, and it takes a certain period of time to propagate at points. can cause widespread damage. Once spot-damaged plants are discovered, immediately pull out all the leaves and all the leaves of adjacent plants, and burn them away from the red sorrel. This can effectively curb the development of the red mite population.

Keeping the ground moist and well-ventilated is the key to prevention.

2. Use pesticides to clean up

The stems and leaves of plants affected by red spider mites turn yellow, the leaves fall off, and the growth is poor. It is not easy to detect in the early stage of the occurrence, but it is already serious when it is discovered, so preventive measures should be taken Lord.

If it is not observed in the early stage of occurrence, it will be serious by the time it is discovered. Then you can use 5% abamectin 3000 times liquid spray to control its harm; you can also use 20% dicofol emulsifiable concentrate 1000 times liquid, 50% difenac 1000-2000 times liquid or 15% mite scavenger 1000 times liquid, on a sunny day Spray in the afternoon, spray once every 3 days, and spray 3 to 5 times continuously to kill it.

Try not to use medicine in the early stages of the spider mite damage. This will not only kill the carnivorous spider mites, its main natural enemy, but also make the spider mites become drug-resistant. Once it is not controlled, the red spider mites in the later stages will Spiders are difficult to remove and no medicine is available.

The following are some breeding and management tips for planting red sorrel:

(1) Choose sandy loam with good drainage and high humus content. In colder areas, only greenhouse cultivation is possible.

(2) When transplanting ramets of ground-planted wood sorrel, repeated transplanting should be avoided. When repotting ramets of potted wood sorrel, attention should be paid to soil replacement and disinfection.

(3) Strengthen fertilizer and water management during the vigorous growth period. For potted wood sorrel, the flowerpot should be rotated frequently.

(4) Strengthen the prevention and control of pests and diseases, and take measures such as overwintering and cold protection.

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