CATDOLL : CATDOLL: The gardenia at home is sick and keeps losing leaves. Small red spots that look like insects appear on the leaves and they won't move. Can you please help me take a look? What should I do?

The gardenia at home is sick and keeps losing leaves. Small red spots that look like insects appear on the leaves and they won't move. Can you help me take a look? What should I do?

This is because of red spiders, which suck the sap of flowers and cause poor growth of flowers. You can use dimethoate or avermectin, dilute it according to the multiple required by the package and then spray it.

Medicine

I need to buy some insecticide to spray

Recently, I have been watering, fertilizing, and getting more sunlight.

Why do red spiders, which feed on plant sap, also weave webs?

Red spiders weave webs.

Red spider mites mainly overwinter in cracks in plant branches, fallen leaves, and shallow soil cracks around the root zone as eggs or fertilized female mites. When the temperature rises in the spring of the second year and the plants begin to sprout and grow, the overwintering female mites begin to move and cause harm. After the leaves unfold, they move to the leaves to cause harm, first on both sides of the main vein on the back of the leaves, and gradually spread from several small groups to the entire leaf. When the occurrence is large, they crawl on the surface of the plant in a thread-like manner and spread by wind.

This insect likes a hot and dry environment. Therefore, under hot and dry climate conditions, it reproduces rapidly and causes serious damage. The insects often gather on the back of flower leaves to spin silk and weave webs to cause damage. In addition to crawling on their own, wind, rain and handling are important ways for the spread of red spiders. Try not to use dichlorvos and dimethoate to treat red spiders (mites), because these two pesticides have a strong smell (it will not dissipate for many days and is particularly irritating), and they are not specific drugs for red spiders.

Here are some special medicines I would like to introduce to you: (I often use them, they are very effective. They have no odor and are sold in any place where pesticides are sold. Just buy them and use them according to the instructions.)

Dicofol, Amitraz, Malathion, Lesben, Big Killer

Any of the above are effective against spider mites (red spiders).

The usage is very simple: put a cap of medicine in a bottle of "Wahaha" pure water, and add a bottle of water. (The above medicines are mixed in this way)

Recipe: 1. Spray detergent solution. Ratio 1:250

2. Spray soap liquid. Ratio 1:50

3. Spray tobacco liquid. 10:250 (Take 20g of tobacco, add 500g of water, soak for 24 hours, filter, and spray the filtrate)

4. Spray pepper liquid. (Take 50 grams of dry red pepper, add 10 times the amount of water, boil for 20 minutes, filter, and spray with the filtrate)

Answered by: El Nino La Nina - Senior Magician Level 7 4-20 18:18

Try not to use DDT and Malperth to deal with red spider mites, because the smell of these two pesticides is too strong (it lasts for many days and is particularly irritating), and they are not specific drugs for red spider mites.

Here are some special medicines I would like to introduce to you: (I often use them, they are very effective. They have no odor and are sold in any place where pesticides are sold. Just buy them and use them according to the instructions.)

Dicofol, Amitraz, Malathion, Lesben, Big Killer

Any of the above are effective against spider mites (red spiders).

The usage is very simple: put a cap of medicine in a bottle of "Wahaha" pure water, and add a bottle of water. (The above medicines are mixed in this way)

Recipe: 1. Spray detergent solution. Ratio 1:250

2. Spray soap liquid. Ratio 1:50

3. Spray tobacco liquid. 10:250 (Take 20g of tobacco, add 500g of water, soak for 24 hours, filter, and spray the filtrate)

4. Spray pepper liquid. (Take 50 grams of dry red pepper, add 10 times the amount of water, boil for 20 minutes, filter, and spray with the filtrate)

High pressure water

Why are they called red spiders? They are called red spiders because they make webs like spiders and they are red. After they make webs, they move very fast on the web and mainly suck the juice from leaves. This is an obvious phenomenon and there is no doubt about it. This insect likes hot and dry environment. Therefore, under hot and dry climate conditions, it reproduces rapidly and causes serious damage. The insects often gather on the back of flower leaves to spin silk and make webs to cause damage. In addition to crawling by themselves, wind, rain and handling are important ways for the spread of red spiders.

Red spider mites do make webs, but when there are few of them, the webs are small and you can't see them. Yesterday, I found that one of the small tomatoes planted on my rooftop was completely surrounded by red spider webs. The leaves and branches were all covered with webs. If you don't look carefully, you can't see them. You can see them by spraying water with a sprayer. There are too many of this plant, so I had to burn it and destroy it humanely. Then I sprayed the others with garlic mashed into water. If that doesn't work, I had to use pesticides.

Red spiders build webs. They like to gather in groups and are very small. They can cause patches of white spots to appear on plant leaves. They can be eliminated with miticides or washed off with water or pepper water.

When growing flowers indoors, various potted plants grow in a relatively dry environment with poor air circulation. Plants in such an environment are definitely very easy to be infected by red spider mites, which like dry and unventilated environments.

Red spider mites suck the sap from plants, causing the leaves to turn yellow and the plants to wilt.

Normally when we buy plants and flowers in flower shops, flower markets or online, we must check them carefully before taking them home. That is, check the back of all the leaves. Once red spider mites are found, we must spray them with pesticides in time (find a return to the merchant). Common insecticides such as Jinmanzhi and Avermectin can be used.

1. Solve with organic methods (predatory mites)

Some friends grow vegetables, fruits, or edible flowers at home and don’t want to spray pesticides on the plants and flowers. In this case, they can also use some organic methods to treat red spider mites, such as buying some predatory mites directly online or in the gardening market. These are small insects that specialize in catching red spider mites. They eat a lot of red spider mites every day. After buying them, you can just sprinkle these predatory mites on the plants infected with pests.

Now we see some organic vegetable sheds use this kind of predatory mite to control red spider mites. This kind of predatory mite specializes in eating red spider mites and is harmless to humans, but its disadvantages are also obvious. Generally, it can only be used once, and the effect of these predatory mites on red spider mites is not very stable. If the pest is serious, it will basically have no effect.

2. Physical violence removal

There is also a more violent way to deal with red spider mites, which is to use some strong water flow to wash away the red spider mites. It is more suitable for some plants that grow stronger. When the red spider mites are more serious, the effect of directly spraying pesticides is also very low, so most of the red spider mites must be washed away. If your plants are seriously infected with red spider mites, you can see red spiders crawling all over the branches of the plants. They will also weave webs on the branches and leaves of the plants, which looks very scary. At this time, you can directly use a strong water flow to directly flush the back of the leaves of the potted plants. Repeatedly flushing with a strong water flow can wash away most of the red spider mites. After that, spraying pesticides can effectively remove the red spider mites.

3. Know the Red Spider

In summer and autumn, red spider mites are a particularly common pest. They will harm any plant in the home and are really not picky about food.

If you find some yellow spots on the leaves of the plants in your home, and the leaves begin to turn yellow and become deformed, some yellow or red dots appear on the back of the leaves, the leaves become particularly dirty, and then some small spider webs appear on the leaves, then it is red spider mites that are harming your plants.

In the early stages, red spider mites will hide on the back of leaves and are basically impossible to detect at the beginning. When they break out in full swing, it is difficult to eliminate them with pesticides. This is a very troublesome thing.

picture

Although the word "spider" is included in the name of red spider, it is a kind of mite. It reproduces very quickly, generally producing a generation every 20 days or so. Each red spider can produce more than 100 spiders every 20 days, so the reproduction rate is simply explosive.

4. Remove with insecticide

After plants and flowers are infected with red spider mites, you can achieve the best prevention and control effect by spraying two or three drugs alternately. For example, spraying Jinmanzhi, Abamectin and Damanlin alternately. The ratio of these drugs to water is 1:1500, that is, one milliliter of medicine is mixed with 1500 milliliters of water. Be sure to pay attention to the concentration used.

There are also skills when spraying pesticides. Try to spray when the weather is clear and avoid rainy weather. It is best to spray before 10 am and after 4 to 5 pm, otherwise the effect will be weakened.

When spraying the pesticide, be careful not to spray only on the leaves, because red spider mites mainly hide on the back of the leaves. After the plant is infected with red spider mites, place the plant in a higher position and use a spray bottle to spray more on the back of its leaves. Also spray more pesticide on the edge of the flowerpot and the soil in the pot, as some red spider mites may fall on the soil.

After that, spray once every 7 days or so, and spray continuously for about two or three times, spraying each type of agent alternately, so that the red spider mites can be completely eliminated.

When caring for potted plants, you must pay attention to preventing red spider mites in advance, especially in hot and dry weather, or in poorly ventilated conditions. You must pay attention to cleaning the leaves regularly, and also clean the leaf surfaces and backs. You can occasionally spray water around to increase the humidity of the environment, and keep the pigs in a well-ventilated location.

Red spider.

Flower control: In the process of flower cultivation, red spiders are common destroyers, and the flowers that are harmed include roses, Milan, jasmine, kumquat, crabapple, osmanthus, bergamot and other flowers. This insect is very small, less than 1 mm, round or oval, orange or reddish brown. Because of its small body, it is not easy to find. Once it is found to be harmful, the flowers are often seriously damaged. This insect uses its mouthparts to pierce the leaves and suck juice, which destroys the chlorophyll, and the leaves show gray-yellow spots or patches. The leaves are orange, fall off, and even fall off. Red spiders have a strong reproductive capacity and can reproduce a generation in as fast as about 5 days. This insect likes a high temperature and dry environment. Therefore, under high temperature and dry climate conditions, it reproduces rapidly and causes serious damage. The insects often gather on the back of the leaves of flowers to spin silk and weave webs to cause damage. In addition to crawling by themselves, wind, rain and operation are important ways for the spread of red spiders. To prevent and control red spiders, you should pay attention to observation. When you find abnormal color of leaves, you should carefully check the back of the leaves. If individual leaves are damaged, you can remove the insect leaves. When more leaves are damaged, you should spray them as soon as possible. Commonly used pesticides include cypermethrin, dicofol, dimethoate, cypermethrin, and cypermethrin. For home flower cultivation, you can prepare a flower sprayer. In 400 ml of water, cypermethrin, cypermethrin, or cypermethrin can be dripped into 4 drops (equivalent to 2000 times the liquid medicine), and cypermethrin or dimethoate can be dripped into 8 drops (equivalent to 1000 times the liquid medicine). After adding the medicine, shake it well and spray it immediately. The spraying requires uniformity and thoughtfulness, especially pay attention to spraying the back of the leaves. When spraying, it is best to move the potted flowers outdoors. If you spray indoors, do not approach food or utensils. After each use, pour out the excess liquid medicine and wash the sprayer with clean water.

Most spiders feed on liquid or small insects. There are about a hundred species of spiders. Most of these animals can make webs. Although red spiders mainly feed on plant juices, they also need to interact with each other for the convenience of communication.

A small insect

When you grow plants and flowers at home, no matter what kind of plant it is, it may be infected by red spider mites, including common plants such as roses, gardenias, jasmine, camellia, chrysanthemums, green ivy, fig, ivy and money trees. They are all infected with red spider mites.

When growing flowers indoors, various potted plants grow in a relatively dry environment with poor air circulation. Plants in such an environment are definitely very easy to be infected by red spider mites, which like dry and unventilated environments.

Normally when we buy plants and flowers in flower shops, flower markets or online, we must check them carefully before taking them home. That is, check the back of all the leaves. Once red spider mites are found, we must spray them with pesticides in time (find a return to the merchant). Common insecticides such as Jinmanzhi and Avermectin can be used.

1. Solve with organic methods (predatory mites)

Some friends grow vegetables, fruits, or edible flowers at home and don’t want to spray pesticides on the plants and flowers. In this case, they can also use some organic methods to treat red spider mites, such as buying some predatory mites directly online or in the gardening market. These are small insects that specialize in catching red spider mites. They eat a lot of red spider mites every day. After buying them, you can just sprinkle these predatory mites on the plants infected with pests.

Now we see some organic vegetable sheds use this kind of predatory mite to control red spider mites. This kind of predatory mite specializes in eating red spider mites and is harmless to humans, but its disadvantages are also obvious. Generally, it can only be used once, and the effect of these predatory mites on red spider mites is not very stable. If the pest is serious, it will basically have no effect.

2. Physical violence removal

There is also a more violent way to deal with red spider mites, which is to use some strong water flow to wash away the red spider mites. It is more suitable for use on some relatively strong plants. When the red spider mites are more serious, directly spraying pesticides will have very low effect, so most of the red spider mites must be washed away.

If your plants are severely infected with red spider mites, you can see red spider mites crawling all over the branches of the plants. They will also weave webs on the branches and leaves of the plants, which looks very scary. At this time, you can directly use a strong stream of water to flush the back of the leaves of the potted plants. Repeated flushing with strong water flow can wash away most of the red spider mites. After that, spray pesticides to remove the red spider mites.

3. Know the Red Spider

In summer and autumn, red spider mites are a particularly common pest. They will harm any plant in the home and are really not picky about food.

If you find some yellow spots on the leaves of the plants in your home, and the leaves begin to turn yellow and become deformed, some yellow or red dots appear on the back of the leaves, the leaves become particularly dirty, and then some small spider webs appear on the leaves, then it is red spider mites that are harming your plants.

In the early stages, red spider mites will hide on the back of leaves and are basically impossible to detect at the beginning. When they break out in full swing, it is difficult to eliminate them with pesticides. This is a very troublesome thing.

Although the word "spider" is included in the name of red spider, it is a kind of mite. It reproduces very quickly, generally producing a generation every 20 days or so. Each red spider can produce more than 100 spiders every 20 days, so the reproduction rate is simply explosive.

4. Remove with insecticide

After plants and flowers are infected with red spider mites, you can achieve the best prevention and control effect by spraying two or three drugs alternately. For example, spraying Jinmanzhi, Abamectin and Damanlin alternately. The ratio of these drugs to water is 1:1500, that is, one milliliter of medicine is mixed with 1500 milliliters of water. Be sure to pay attention to the concentration used.

There are also skills when spraying pesticides. Try to spray when the weather is clear and avoid rainy weather. It is best to spray before 10 am and after 4 to 5 pm, otherwise the effect will be weakened.

When spraying the pesticide, be careful not to spray only on the leaves, because red spider mites mainly hide on the back of the leaves. After the plant is infected with red spider mites, place the plant in a higher position and use a spray bottle to spray more on the back of its leaves. Also spray more pesticide on the edge of the flowerpot and the soil in the pot, as some red spider mites may fall on the soil.

After that, spray once every 7 days or so, and spray continuously for about two or three times, spraying each type of agent alternately, so that the red spider mites can be completely eliminated.

When caring for potted plants, you must pay attention to preventing red spider mites in advance, especially in hot and dry weather, or in poorly ventilated conditions. You must pay attention to cleaning the leaves regularly, and also clean the leaf surfaces and backs. You can occasionally spray water around to increase the humidity of the environment, and keep the pigs in a well-ventilated location.