Agroperlite Based Cactus Soil
In compiling the earthen mixture for cacti, different composition of the soil mixture is used, while the pattern of cacti is revealed to grow well only if the soil meets two conditions:
- the land mixture must contain a very small amount of organic fertilizer (nitrogen).
- the soil mixture must be loose, airy and moisture permeable and maintain these properties throughout the entire period of use.
The literature often indicates the optimum acidity of the soil for cacti (PH = 5.5-6), but since there is nothing to measure, so as not to make a mistake, we simply use a mixture of earth from different places.
Determining by sight how fertile the soil is not always easy, especially in the absence of experience. Therefore, if in doubt, you should carefully monitor the growth of the transplanted plant. If the cactus begins to grow violently and its skin is cracked, this means that the soil contains an excess of nitrogen and the cactus needs to be transplanted urgently into poorer soil, and sprinkle the wounds with sulfur or coal powder, avoiding their contact with water and moisture.
It is not easy to determine how lose the mixture turned out to be. Earlier, when compiling land mixtures for friability, sand and expanded clay were added. Of course, at the same time, the land mixture became loose especially at the time of transplantation, and then after several waterings, it still tried to turn into an earthen lump, which, when transplanted later, fell out of the pot entirely.
Now it is considered a land mixture that is suitable in structure if during transplanting a plant is easily removed from the pot and part of the land mixture is showered from the roots. An earth mixture of the following composition is used:
- forest land No. 1 – 3 parts
- forest land No. 2 – 3 parts
- vermicompost – 1 part
- agroperlite – 2 parts
- expanded clay – for the top layer
This composition does not include sand separately, although it was used before (besides, sand is present in forest land).
Sand stopped adding after the use of agroperlite, which has the following advantages: agroperlite is a much lighter material and therefore loosens the soil very much, besides it absorbs excess moisture and gradually dries up moisture when the soil dries. In this composition, the earthen mixture turns out to be so loose that drainage can be omitted, excess water is so easily drained through the bottom opening of the pot. An earthen mixture of this composition is suitable for most cacti with a few exceptions (cacti originating from the aridest places – it is better for them to abandon the use of vermicompost).