What is the reason why the lower part of the cactus turned white I found my cactus today

There may be several reasons why the lower part of the cactus turns white:

1.It may be due to the damage of the spider mite, which sucks sap on the surface of the cactus, causing the green color of the cactus to gradually decrease and turn grayish-white or silvery-white.

2.Probably due to intense sun burns, although cacti love sunlight, exposure to strong sunlight may cause its leaves to become sunburned, turning white.

3.Probably due to overwatering, cacti are drought-tolerant plants, and if overwatered or too often, it can cause root rot and whiter bottoms.

4.Probably due to the low temperature, the cactus grows well in a warm environment, and if the temperature is too low, it may cause frostbite and wrinkles at the bottom.

5.Probably due to too much light, although cacti love the sun, prolonged exposure to the sun may cause water loss in the soil, causing the bottom folds of the cactus to shrink and sunburn the entire sphere.

All of the above are the reasons that may cause the lower part of the cactus to turn white, and the specific solution needs to be judged on a case-by-case basis. For example, if it is because of the damage of red spiders, it is necessary to isolate the infested cactus and trim the infested parts. If it is caused by sun exposure, it is necessary to move the cactus to a cool place for maintenance.

If it is caused by overwatering, you need to reduce the amount and frequency of watering. If the temperature is too low, it is necessary to store the cactus in a warm environment for maintenance. If it is caused by too much light, it needs to be properly shaded.

1. The reasons why cacti turn white are:

1. Red spider.

harm;

2. It may be a strong sun burn.

Second, the care method of cactus:

1. Sunshine: Cactus.

Sunlight is required, if the cactus is kept indoors for a long time, and there is no sunlight, it will not bloom.

2. Temperature: The cactus should be warmer in environmental conditions, if the ambient temperature does not reach more than 20 degrees, it will not bloom.

Cactus blooming is rare, especially white, the probability is the same as the discovery of a new asteroid in the 18th and 19th centuries, so a cactus with white flowers can drive away all bad luck, and it is more worthwhile to be safe and secure with the people who can share it with you.

This insect is a "scale insect", which is a common pest of cacti and other plants, and is also one of the "six small insects of the garden".

Treatment method: Mix liquor with water, the ratio is 1:2. When treating insects, water the surface layer of the potting soil thoroughly. Scale insects begin to move at room temperature 7 in spring. It can be poured once in April, and then every half a month or so, and it is effective for 4 consecutive times.

Use 50 ml of vinegar (rice vinegar), soak a small cotton ball in vinegar, and gently rub it on the stems and leaves of the affected flowers and trees with a wet cotton ball to wipe off and kill the scale insects. This method is convenient and safe, which can not only achieve the purpose of insect control, but also make the damaged leaves green and shiny again.

Gently and repeatedly rubbing the diseased plant with alcohol can remove the scale insects, and it can be removed very cleanly and thoroughly. If you wipe the orchid leaves with alcohol, not only can you get rid of the scale insects, but also the larvae that are not clear to the naked eye, and they are completely killed.

Mix the mother liquor with diesel, washing powder and water in the ratio of :6, at this time the mother liquor contains 60% oil, which is milk-like, dilute the 30% oil content with water, and carefully spray the scale insects on Milan, kumquat and cycads. After one week, most of the scale insects changed from fresh orange to shriveled state, indicating that this method has a good control effect on scale insects.

After the cactus is raised for a long time, the area near the roots will gradually become lignified, that is, it will first change color and then harden.

This white spot should be lignifying. If you are sick, please amputate your limb and do a good job of disinfecting.

Fungal or bacterial infection, breaking the cell structure, cell fluid dissolving, that is, softening.

The presence of hyphae in large numbers, or spores, that is, whitening. It feels like there is a problem with the roots, the surface is dehydrated, and it feels like it will rot if it is left for a few days, if the weather is warm, it is recommended to take it out to see if there is a problem with the roots, and then transplant a larger pot after a few days of drying. Don't be like this when it's cold......Color change is essentially a chemical change.

1. Either it is the changes in its own growth and development metabolism.

2. Either it is oxidized.

It may also be that 1+2 metabolites are oxidized.

Many colleagues have reported that the potted cactus balls bought from the flower shop are very easy to die, and they are easy to die if they are not watered, and they don't know what the problem is. However, when buying cactus, you can look at the roots of potted plants, buy potted cacti with roots, especially the kind of miniature small potted plants.

The following is a cactus raised by flower friends, is there no help, from green to yellow, there is no one. This potted cactus was sunburned because flower friends left the potted plant on the balcony for too long.

There are five things to pay attention to when planting potted cacti.

1. Temperature: Potted cactus likes high temperature and dry environment, and the temperature is too low to cause root rot, but the temperature is too high, and it is easy to cause scale insect damage.

2. Light: Potted cacti require sufficient sunlight, but they cannot be exposed to strong light in summer, and need to be properly shaded. Indoor cultivation can be irradiated with light to make it grow robustly.

3. Soil: potted cactus is suitable for the growth of well-drained sandy loam soil, and artificial cultivation soil is mostly used for indoor cultivation, which is usually mixed with peaty soil and fine sand; You can also use crushed pine needles to add fine sand and mix the prepared soil for planting.

4. Watering: Potted cactus requires a dry environment, for fear of water accumulation in the potting soil, resulting in root rot, it is best to use dried water for irrigation.

5. Fertilization: When changing potting soil for potted cactus, a small amount of basal fertilizer should be applied at the bottom of the pot. During the growth period, the fermented organic fertilizer liquid fertilizer is watered once every half month, and the fertilizer concentration should not be too large.

There are 2 possibilities;

1.That's a scale worm, we need to get rid of it quickly

I usually scrape it off with a toothpick and then apply it with 10% alcohol, and the effect is good.

2.It's not the cactus that grows on its own, but it is estimated that some small insect laid eggs on it, and then sealed it with white slime on the outside to form small white spots. The advantage of laying eggs on the cactus is that it prevents enemies from stealing the eggs, so some bugs lay eggs on the cactus.

Look at that breed.

Maybe it's a lack of trace elements.

Where and what kind of white dots?

Yes · You've soaked the cactus ball to death

The round cactus balls have long white hair, bloom in winter, and are full of fruit in spring, and are beautiful in all seasons!

There are usually two cases of white hairs growing on the top of a cactus:

1. White hair is the degraded leaf of the cactus, the appearance of white hair indicates that the cactus has grown, only in this way can the cactus reduce transpiration and then grow new leaves, which is a normal phenomenon, and this habit is also the manifestation of the cactus adapting to drought;

2. White hair may be hyphae, which is a pathology, especially when watering directly on the sphere, which is easy to produce, and needs to be paid attention to and prevented.