Those who like to use organic fertilizer in their soil will be more likely to be disappointed with cacti. In the area of origin of the robust plants only a little flourishes and so there are few plant parts from which humus could be formed. In addition, animals can hardly find anything to eat here, which is why there is little manure. Therefore, cacti mainly draw their nutrients from the mineral components of the soil.įor organic fertilization, a liquid fertilizer such as Cactus Plus 2-7-7 from Schultz is recommended. Mixed into the irrigation water, the valuable nutrients can easily be added to the previously moistened cactus soil. One advantage of cacti is that there is no risk of leaching through infrequent watering. Organic Fertilizer for Cactus: The Right Approach Only then do they feel really good and can thrive. If, on the other hand, the value is too acidic or too basic, some nutrients are less available to the plant. Last but not least, you should of course not ignore the soil pH value. Cacti need a pH value between 6 and 7. In addition to various essential trace nutrients, the best cactus fertilizer also contains nitrogen, phosphorus and potassium. The main difference to conventional fertilizers lies in the ratio. While chemical fertilizers usually contain significantly more nitrogen than phosphorus and potassium, the reverse is true for cacti fertilizers. If there is as much or even less nitrogen than phosphorus or potassium in the fertilizer, this is a good cactus fertilizer ratio. Sufficient phosphorus is essential for abundant flowering Symptoms of deficiency appear late and do not emerge as quickly. So try to find the right amount of fertilizer ratio. If the cactus begins to lighten, this is a clear sign of a lack of potassium or nitrogen. The lightening is usually strongest at the base of the cactus and sooner or later it becomes woody. The deficiency is also accompanied by a slowdown in growth. Recognize deficiency symptoms in cactiĬacti generally get by with few nutrients. It is therefore usually better to fertilize too little than too much. Too much can quickly lead to soft tissue. In winter, like most plants, cacti require a rest period. That is why the last fertilization of the year is in August. The first dose is only given in April or May after the cactus has started the growing season. The main fertilization season is in June and July. In these two months, you should fertilize your cacti more than in May and August. In their homeland, it rarely rains but it rains heavily. Only then can the cacti roots absorb nutrients with the water. The fertilization is therefore heavily dependent on watering and should also be done via irrigation water. The fertilizer solution Cactus Plus 2-7-7 from Schultz is ideal for this. During the growing season, fertilize the soil every one to four weeks, depending on the type of cactus. 2.4 How to Make the Best Fertilizer for Cactus Plants.2.1 Organic Fertilizer for Cactus: The Right Approach.1.1 Recognize deficiency symptoms in cacti. With these conditions in mind, you basically have everything you need to know to keep your cactus plants happy. If you don’t have a green thumb, you will at least get a cactus ( Cactaceae) to make ends meet – at least that’s what they say. In practice, however, one often hears the phrase “Even the cacti die on me”. Fortunately, it is not that difficult to take care of frugal beings. And with a little knowledge, you can achieve a lot.Ĭacti grow slowly. It’s no wonder because the hardy plants come from the barren regions of America. In order to better understand cacti and their needs, you should dare to take a look at the world of their prickly contemporaries: The soil is mostly dry here and the rare availability of water determines the rhythm of life. The surrounding vegetation is sparse and there are few dead plant parts that could be converted into humus. The earth therefore mainly consists of mineral components. To make ends meet, the cactus has to slowly and steadily build up biomass.
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