What are the reasons why a cactus turns yellow?

Some cacti start to turn yellow at the base. This usually happens after 4 years of life. The lower part of the stem becomes rough, a yellow-brown coating appears. If there are no ulcers under it and the base of the cactus is solid, then nothing terrible has happened. Otherwise, these are signs of developing rot.

Details

One possible reason may be a lack of micronutrients. The situation can be corrected by feeding with complex fertilizer and creating the most favorable conditions. In extreme cases, it is necessary to transplant into a higher-quality soil mixture.

A cactus that is not accustomed to abundant sun may develop burns in the form of yellow spots, which will eventually disappear.
The causes of yellowing of the stem may be the appearance of a spider mite or a change in the watering regime. In the first case, you should treat with an appropriate acaricide, in the second - adjust the amount of water and protect the plant from hypothermia.

Most often, the causes of diseases lie in improper conditions of maintenance. Even experienced florists make mistakes that lead to irreparable consequences. Only strict adherence to all rules for caring for a cactus and timely prevention can prevent the appearance of diseases.