CATDOLL : CATDOLL: Why do some cacti produce red spider mites?

1. Scale insects

Some flower lovers have doubts about the fact that scale insects can breed on cacti, thinking that the temperature in winter is not suitable for scale insects to breed. However, flower lovers, there is heating in the north in winter! When the room is hot and stuffy with poor ventilation, the eggs hidden in the soil are very likely to revive, reproduce and destroy your cactus.



If you see tiny white bugs on your cactus in winter, and the cactus starts to grow weaker or even turns yellow, don't hesitate. If the problem is minor, spray the bugs with 75% alcohol. If the problem is serious, just change the pot and kill the bugs.



2: Red Spider

Red spider mites mostly grow in the tender part of the cactus wax whorl. Cacti with red spider mites often have their stem nodes fall off, or the cactus balls appear yellow-brown, giving off a sick feeling. If red spider mites appear on your cactus, flower lovers should immediately spray them with avermectin.



3: Anthrax

Cacti can also get anthrax, especially in winter when the temperature is high in rooms with heating and some families use humidifiers all year round. If the humidifier is close to the cactus, and the indoor ventilation is poor, and the cactus has wounds at this time, it will easily be infected with anthrax.



Anthracnose often occurs on the edge of the cactus, and the spots are light brown or white-gray. At first, the spots will be small, and as time goes by, the spots will gradually expand. One of the main ways to treat cactus anthracnose is to gently cut off the spotted part, immediately sterilize the wound, and place it in a relatively dry place.



4. Aphids

Aphids are similar to scale insects. They all develop because the planting materials are not clean, so the eggs encounter the right temperature and slowly recover. Aphids will suck small holes on the cactus. If you encounter such a situation, if the situation is not very serious, it is recommended that you change the pot and kill the insects as soon as possible.



5: Stem rot

Yes, cacti that like to grow in slightly dry soil will also suffer from stem rot. This disease is manifested on cacti as yellow-green patches with water stains, which gradually become soft and rotten, leaving only a dry outer skin in the later stage. Generally speaking, there is no way to save slightly more serious stem rot. We can only focus on prevention, that is, make the air less humid and stuffy, and the chance of cactus stem rot will be lower.



In fact, the chances of cactus getting sick or infected by pests are very small, as long as we ventilate the room regularly and the indoor humidity is not too high, it doesn't matter if the temperature is a little higher. The most taboo thing is to keep the cactus in winter, to keep warm and to use humidifiers desperately to humidify it. The closed, humid and stuffy environment is very detrimental to the growth of the cactus. Flower lovers should keep this in mind!

Whether it appears at home or at work, cacti are a beautiful sight that can adjust the mood of flower lovers. Don’t think that it is easy to grow cacti in winter. Winter is the peak season for cactus diseases and pests! Let’s take a look at the diseases and pests of cacti in winter!

1. Scale insects

Some flower lovers have doubts about the fact that scale insects can breed on cacti, thinking that the temperature in winter is not suitable for scale insects to breed. However, flower lovers, there is heating in the north in winter! When the room is hot and stuffy with poor ventilation, the eggs hidden in the soil are very likely to revive, reproduce and destroy your cactus.

If you see tiny white bugs on your cactus in winter, and the cactus starts to grow weaker or even turns yellow, don't hesitate. If the problem is minor, spray the bugs with 75% alcohol. If the problem is serious, just change the pot and kill the bugs.

2: Red Spider

Red spider mites mostly grow in the tender parts of cacti. Cacti with red spiders often have their stem nodes fall off, or the cactus balls appear yellow-brown, giving off a sick feeling. If red spider mites appear on your cactus, flower lovers should immediately spray them with avermectin.

3: Anthrax

Cacti can also get anthrax, especially in winter when the temperature is high in rooms with heating and some families use humidifiers all year round. If the humidifier is close to the cactus, and the indoor ventilation is poor, and the cactus has wounds at this time, it will easily be infected with anthrax.

Anthracnose often occurs on the edge of the cactus, and the spots are light brown or white-gray. At first, the spots will be small, and as time goes by, the spots will gradually expand. One of the main ways to treat cactus anthracnose is to gently cut off the spotted part, immediately sterilize the wound, and place it in a relatively dry place.

4. Aphids

Aphids are similar to scale insects. They all develop because the planting materials are not clean, so the eggs encounter the right temperature and slowly recover. Aphids will suck small holes on the cactus. If you encounter such a situation, if the situation is not very serious, it is recommended that you change the pot and kill the insects as soon as possible.

5: Stem rot

Yes, cacti that like to grow in slightly dry soil will also suffer from stem rot. This disease is manifested on cacti as yellow-green patches with water stains, which gradually become soft and rotten, leaving only dry skin in the later stage. Generally speaking, there is no way to save slightly more serious stem rot. We can only focus on prevention, that is, make the air less humid and hot, and the chance of cactus stem rot will be smaller.

In fact, the chances of cactus getting sick or suffering from pests are very small. As long as we ventilate the room regularly and the indoor humidity is not too high, it doesn't matter if the temperature is a little higher. The most taboo thing is to keep warm in winter and use a humidifier to humidify the room. A closed, humid and stuffy environment is very detrimental to the growth of the cactus. Flower lovers should keep this in mind!

Hello, my friend, if it is too dry, spray it with water frequently, water it when it is completely dry, and place it on the balcony, preferably in a bright and ventilated place. Go to the flower market and have a look, there are plant insecticides to spray.

In the process of caring for cacti, many flower lovers always have problems with watering. Some flower lovers cannot control the amount of watering, which will cause water accumulation and root rot.

When watering, generally speaking, water it once a week to ten days. If the surrounding environment is relatively dry, you can water it more. If the surrounding environment is relatively humid, you can water it less to avoid water accumulation and root rot.

In winter, if the surrounding temperature is relatively low, you need to move them back indoors for maintenance. At the same time, make sure the surrounding minimum temperature cannot be lower than 5 degrees. You can place it on a windowsill with sufficient diffused light, but be careful not to let its leaves get close to the window glass, otherwise frostbite may occur.

illumination

When caring for a cactus, you should pay attention to giving it sufficient light, but in summer, you should pay attention to providing it with shade to avoid burns caused by excessive sunlight.

soil

Cacti prefer fertile, well-drained, slightly alkaline sandy soil. When caring for cacti, you can mix compost, garden soil and river sand in a ratio of 2:4:4 for annual maintenance.

Fertilization

When fertilizing the cactus, it should be done during its vigorous growth season. You can apply some fully decomposed organic fertilizer or fertilizer with residue, which can promote its growth.

temperature

Cactus has certain requirements for growth temperature. It has a strong heat resistance and the best growth temperature is between 20 and 30 degrees. Note that the minimum temperature around it cannot be lower than 5 degrees, otherwise it may suffer frostbite.

In the normal maintenance process of cactus, in addition to paying attention to the above issues, you must also pay attention to giving it good ventilation, otherwise diseases such as red spider mites will appear. When diseases and pests are discovered, pay attention to timely prevention and control to avoid affecting the growth of the entire plant.

The weather in June was extremely hot. It was not easy to get rid of the sultry air. I was getting more and more irritated, staring at the test papers with bright red scores on them. I rushed into the house in the wind and rain.

As soon as my parents saw me coming home, they immediately asked about my school situation. I couldn't stand their nagging and rushed into the room. The door was slammed shut. The rain became lighter, and the sound of the rain hitting the awning outside the window was clearly audible. The cactus on my desk was stuck in the dry sand after several days of high temperature. It was a rare rainy day, so I decided to put my beloved cactus at the door of my house. Let it slowly accumulate the breath of nature. The rain seemed to become lighter, like a cow's hair.

One morning, the sun was very fierce, like a big fireball burning the earth, and the temperature was surprisingly high. Not to mention the outdoors, even in my room, it was unbearable. Sweat as big as beans flowed from my forehead to my cheeks, and then dripped from my chin. At this time, I thought of the almost withered cactus. I thought that under such scorching sunlight, the cactus should be dying soon! When I passed by the door, everything in front of me made me speechless, which was beyond my expectation. The cactus in the sun held two small golden flowers swaying in the wind. Against the background of green, the yellow flowers looked particularly conspicuous and lovely. There were a few fat bees flying around the yellow lace. The golden flowers were like newborn babies, greedily sucking the fragrance of nature, and the slightly white stamens in the yellow also added luster to the flowers.

At this time, my mother came over and said, "This cactus is really full of vitality. On that rainy night, you put it at the door, and it absorbed and accumulated little by little before it bloomed."

So I looked at the cactus at the door, and then went back into the room and started to work overtime and review the knowledge I had learned seriously. I put on my headphones and read those devilish English words aloud. When I was a little impatient, I passed by the door and saw the cactus again, so I persisted.

It was late at night, the cicadas were chirping, but the light in my room was still on. I was reading by lamplight for the cactus in my heart. And the cactus at the door was growing rapidly without my noticing, and it kept blooming...

Introduction: Why do cacti always have diseases and insect pests? What are the solutions? The correct method is to keep the leaves green.

Hello everyone, welcome to this episode of Agriculture, Rural Areas and Farmers. Although the cactus has many thorns on its surface, it has a very high ornamental value. Many farmers will find many problems when raising cacti. In the early stages of growth, there are relatively few problems with cacti, but as time goes by, it will present more and more problems, such as pests and diseases, which is a headache for everyone. Early nuclear damage by pests and diseases is a more serious phenomenon among all plants. Most of the reasons are that the management work is not done well, which causes the slow growth of plants. Today, let me talk to you about the pests and diseases that occur during the growth of cacti and how to prevent and control them.



1. The impact of red spider mites on cacti

The appearance of red spiders will pose a great threat to the growth of plants. Red spiders are very small, less than one millimeter long, and their body color is generally reddish brown or orange-yellow. The main reason for their appearance is the hot and humid weather, which is very suitable for the mass reproduction of red spiders. When they appear, the leaves will shrink rapidly, visible to the naked eye, because this pest mainly endangers the leaves.



The parts attacked by pests usually show small yellow-brown spots, which is the loss of green leaves. When the situation is critical, the leaves of the cactus may even scorch. The appearance of red spider mites will not only endanger the leaves, but also spread viruses, making the condition of the diseased plants more and more critical. When we find red spider mites around the cactus, we should spray them with pesticides in time to completely eradicate them. Spraying about three times can completely eliminate the red spider mites.