What are the methods for controlling red spider mites on flowers?

In the process of cultivating flowers, red spider mites are common destroyers. Flowers affected by them include Chinese rose, Aglaia odorata, jasmine, kumquat, crabapple, osmanthus, and finger citron. This insect is very small, less than 1 mm, round or oval, orange-yellow or reddish-brown. Because it is small and hard to find, by the time it is discovered, the flowers are often already quite severely damaged. This insect harms plants by piercing its mouthparts into the leaves and sucking the sap, which destroys chlorophyll, causing the leaves to show grayish-yellow spots or patches. The leaves turn orange-yellow and fall off, or may even drop completely.

Red spider mites have a very strong reproductive capacity. At the fastest, they can reproduce one generation in about 5 days. This insect likes high-temperature, dry environments. Therefore, under high-temperature and drought climate conditions, it reproduces rapidly and causes severe damage. The insects mostly gather on the underside of flower leaves, spinning silk webs while causing damage. The spread of red spider mites depends not only on their own crawling, but wind, rain, and carrying during operations are also important routes.

To control red spider mite damage, attention should usually be paid to observation. When abnormal leaf color is found, the underside of the leaves should be carefully checked. If only a few leaves are damaged, the infested leaves can be removed. If more leaves are affected, pesticide should be sprayed as early as possible. Commonly used pesticides include propargite, dicofol, dimethoate, huachongjing, and fenvalerate. For home flower growing, a flower sprayer can be prepared. In 400 ml of water, 4 drops of propargite, fenvalerate, or huachongjing can be added (equivalent to a 2000-fold solution), or 8 drops of dicofol or dimethoate can be added (equivalent to a 1000-fold solution). After adding the pesticide, shake well and spray immediately. Spraying should be uniform and thorough, with special attention to spraying the underside of the leaves well. When spraying, it is best to move the potted flowers outdoors. If spraying indoors, do not get near food or utensils. After each use, pour out the leftover pesticide solution and wash the sprayer clean with clean water.