It is not you but the red spider who loves rose most in summer.
Red spider can be said to be a common disease in summer, rose is easy to appear, let a lot of people have a headache, let's see how to solve it! It is said that the one who likes rose most may not be us, and Starscream. This annoying red spider appears on the rose almost every summer. And it is often controlled by one drug, which is prone to resistance. This red spider, but deeply hurt our rose.
The outbreak of red spiders usually occurs in summer, and the reproduction is accelerated in a dry environment and temperatures below 35 degrees Celsius. Reproduction decreases in humid environments, and decreases when the temperature exceeds 35 degrees Celsius. If more than 35 degrees still break out, that kind of red spider is also a mutant resistant red spider.
Traditional medicine does not have the ability to kill red spiders, such as avermectin, although it also kills red spiders, but does not have the effect of killing eggs. Secondly, after the outbreak, there was no effect at all. At present, the best drug ingredient for red spiders on the market is biphenylhydrazine ester, which is a safe acaricidal agent that can kill insects and eggs.
Red spiders usually hide in the soil, especially during the winter. After the beginning of spring, it will slowly begin to harm the rose, and it will erupt in summer. Therefore, under normal circumstances, it is necessary to clear the garden. People should also like to change soil directly, which can also effectively prevent the outbreak of red spiders.
Of course, there are some more corny methods, such as spraying with a sprayer. This is OK in a small area, but an outbreak in a large area is not appropriate. Of course, as we said earlier, there will be fewer red spiders in the rose in a humid environment. So proper spraying is beneficial to the growth of rose.
Well, if you want to prevent red spiders, just do as I say. The medicine must be selected correctly. If you play 2 times without control, you need to change the dressing, otherwise it will cause drug damage.
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