Plants will bloom and smell in ideal soil, and not wither and become sick.
Mold often appears on the surface of the flower soil. Such "neighborhood" is dangerous for both the plant and can cause harm to humans.
Therefore, it is not worth breeding mold. It is necessary to take measures. The ideal option is to throw away the old soil and fill it with new. If this is not possible, there is another way.
You will still have to dig in the soil, but improve it a little. First, you need to make a drainage layer of expanded clay or charcoal.
The top layer of soil must be removed. The rest of the soil must be loosened and covered with a small layer of sand. Fungi appear on it very rarely. But sand will help only if the problem has arisen recently.
If the white “plaque” has grown deep, then the soil must be renewed in any case, and the roots must be treated with “Fitosporin” or a weak solution of potassium permanganate.
To prevent mold from bothering you, it is important not to overwater the plants. In addition, it is necessary to water the flowers regularly.
If the "green pets" suffer from a lack of moisture for a long time, and then receive a large amount of water at one time, they simply will not have time to absorb it all. Water will stagnate, which will increase the likelihood of mold.