Raising plants and flowers at home, no matter which plant, may infect red spiders, including common plants such as moonflowers, gardenias, jasmine, camellias, chrysanthemums, green lotuses, figs, ivy and fortune trees.
When raising flowers indoors, all kinds of potted plants grow in a relatively dry environment, air circulation is relatively poor, plants in such an environment is certainly easy to infect red spiders, red spiders like dry and not ventilated environment.
Usually when we buy plants and flowers in flower shops, flower markets or online, before the plants are bought home, we must check clearly, that is, the back of the leaves is all checked, once the condition of the red spider is found, we must spray the drug in time to remove (find the merchant to return), you can use the common golden branches and avermectin and other insecticides.
1. Solve it by organic method (predator mite).
Some friends at home to maintain some vegetables, fruits, or edible flowers, do not want to spray insecticides on plants and flowers, that can also use some organic methods to treat red spiders, such as directly on the Internet or gardening market to buy some is predatory mites, is a small insect specializing in catching red spiders, they will eat a lot of red spiders every day, after buying back, directly sprinkle these predatory mites on the plants infected with insect pests.
Now we see some organic vegetable sheds that use this predator mite to control red spiders. This kind of predator mite specifically eats red spiders, there is no harm to people, but its shortcomings are also obvious, generally can only be used once, and the effect of these predator mites eating red spiders is not too stable, if it is less in the time of serious insect pests, it is basically no effect.
2. Physical brute force removal
There is also a more violent way to deal with red spiders, that is, to use some strong water to wash away the red spiders, which is more suitable for use in some more robust plants, and when the red spiders are more serious, the effect of direct spraying insecticides is also very low, so most of the red spiders must be washed away.
If your plant infection with red spiders is particularly serious, the branches of the plant can be seen crawling with red spiders, they will also form webs on the branches and leaves of the plant, it looks very scary, this time you can directly use a strong water flow to the back of the leaves of this potted plant directly flushed, with a strong water flow repeatedly rinsed, you can wash away most of the red spiders, and then spray insecticide, you can clear the red spiders very well.
3. Know the red spider
In the summer and autumn, the red spider is a particularly common pest, no matter what plant in the home, it will be a scourge, really not picky eaters at all.
If you find some yellow spots on the leaves of the plants at home, and the leaves begin to turn yellow and become deformed, there will be some yellow or red dots on the back of the leaves, the leaves will become particularly dirty, and then there will be some small spider webs on the leaf surface, that is the red spider is harming your plant.
The red spider will hide in the back of the leaf in the early stage, basically can not be found at the beginning, and when it is fully erupted, it is difficult to remove with insecticides, which is a very headache.
Although the red spider has the word "spider" in its name, it is a kind of mite, the rate of reproduction is particularly fast, generally every 20 days or so can breed a generation, each red spider can breed more than 100 every 20 days, so the index of this breeding is simply explosive.
4. Remove with insecticide
After the plant flowers are infected with red spiders, they can be sprayed alternately with two or three drugs, which can play the best control effect, such as alternating spraying with golden branches, avermectin and pyridoxine, the ratio of these drugs to water is 1:1500, that is, a milliliter of agent with 1500 ml of water, be sure to pay attention to the concentration of use.
There are also techniques when spraying, try to choose to spray when the weather is sunny, avoid rainy weather, and it is best to spray before 10 am and after 4 to 5 pm, otherwise the effect will be weakened.
When spraying the agent, be careful not to spray only the leaf surface, because the red spider is mainly hidden on the back of the leaf, after the plant is infected with the red spider, the plant should be placed in a higher position, the watering can should be sprayed more to the back of its leaves, the edge of the pot and the pot soil should also be sprayed with some pesticides, some red spiders may fall on the surface of the soil.
After that, it is sprayed every 7 days or so, about two or three times in a row, and each agent is sprayed alternately, so that the red spider can be completely removed.
When maintaining potted plants, we must pay attention to preventing red spiders in advance, especially in the case of hot and dry weather, or poor ventilation, we must pay attention to regular cleaning of leaves, leaf surfaces and leaf backs should also be cleaned, you can occasionally spray water around to increase the ambient humidity, and raise pigs in a well-ventilated position.