Fertilizer cacti at home conditions - a necessary agricultural application, the correctness of which depends on the growth of succulents and their regular flowering. But even if there are no flowering specimens in your collection, watering cacti with fertilizers is still important, because proper fertilizing stimulates the development of internal tissues, and their deficiency provokes the appearance of cracks on the stem.
In order to develop normally, cacti, like other plants, need to receive "building material" - various chemical elements. Some of them are plants obtained from water and carbon dioxide.
The rest is extracted either from the planting substrate, or from fertilizing - mineral fertilizers. What should be fertilized cacti at home, and this article is devoted.
The correct composition of fertilizers for cacti
- All necessary chemical elements are divided into two main groups: macro - and microelements.
- There are three main macronutrients: nitrogen (N), phosphorus (P) and potassium (K).
Therefore, complex NPK (azofoski) fertilizers with different percentage of macroelements are suitable for cacti. Nitrogen in such mixtures is usually represented in nitrate and ammonium form.
Cacti generally grow slowly, so for their development excess nitrogen concentrations are not as necessary as for many food or ornamental crops with large leaf biomass. That is why the use of organic fertilizer solutions with a large mass fraction of nitrogen is not welcomed as a correct fertilizer.
Plants can simply burst - the development of external tissues will lag behind the development of internal ones. As a result, ugly, long visible cracks on the sides of the stem of the plant will remain.
Phosphorus is usually present in the form of highly soluble phosphates, for example, various potassium phosphates. It is believed that the necessary concentrations of phosphorus favorably affect the regular and abundant flowering. Potassium is essential for fruiting.
Knowing the low interest of plants in nitrogen and the strong need for phosphorus and potassium, we select fertilizers to meet these needs. All dry or liquid NPK fertilizers have a set of numbers corresponding to the ratio of N: P: K percentages (for example, 15: 15: 15 or 11: 22: 22, etc.).
In relation to cacti, it is better if the mass fraction of nitrogen in the dressing does not exceed 5-8%, and the proportion of phosphorus and potassium starts from 17% and increases depending on the variety.
Watering cacti at home with liquid fertilizer (with video)
In liquid fertilizers for cacti, as a rule, add trace elements in the form of easily soluble salts. Trace elements - iron, cobalt, copper, manganese, zinc, etc. - these are chemical elements that are needed in much smaller quantities.
At times in the stores you can find dry mixtures of trace elements in the form of easily soluble chelate salts. On the packaging of all fertilizers there are recommendations for the preparation of working solutions. If fertilizers are intended specifically for cacti, such recommendations can be followed; in other cases, it is better to prepare weaker solutions.
Adult plants can be fertilized up to 2-4 once a year during the active growing season. It is believed that the first watering in the season is best done without fertilizers, so that the plants after winter will have time to form a good peripheral root system.
And only after that, during the second or third irrigation, you can begin to give mineral supplements. Seedlings contained in the greenhouse under the lamps can be fertilized regularly throughout the year, for example, once a month, using slightly less concentrated solutions than for adult plants.
And what else can you fertilize cacti at home? In addition to mineral fertilizers applied with irrigation, there is a group of granular, slowly soluble fertilizers applied to the soil along with the planting mixture.
Granules of such fertilizers can be mixed in certain quantities in a new planting mixture. After planting as the cacti grow and during irrigation, these granules slowly dissolve - for months or even years, releasing the necessary elements into the soil. In your usual practice it is better not to use the last kind of dressings.
It is believed that the lack of certain macro-and micronutrients can lead to serious violations in the development of plants, which could be interpreted as the result of a lack of any chemical elements.
How the cacti fertilizer is performed is shown in this video: