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Organic fertilizers have a natural long-term effect, as the nutrients they contain are only released during the decomposition process. This supplies it, which consists of purely organic ingredients and is approved for organic farming Slow release fertilizer all garden and also heavily hungry potted plants (e. B. Geraniums, Petunias etc.) for up to five months with all the necessary nutrients. The main component of the fertilizer is sheep's wool, but it also contains meat bone meal and vegetable substances from the food, luxury and animal feed industries. You can use the Compo Bio Universal long-term fertilizer for all vegetable plants, fruit trees and ornamental plants. The practical pellet shape allows easy dosing and application.

If you value a long-term fertilizer made from animal-free raw materials, then you are well advised to use the organic universal fertilizer from Plantura: This consists of purely plant-based fertilizers Substances from the food, luxury and animal feed production, mineral rock phosphate is also included - phosphate is important for a lush bloom formation as well as for a strong one Root system. The high potassium content ensures that vegetables, fruits and herbs stay healthy and taste good. But the granulate is not only suitable for useful plants, many ornamental plants also benefit from the fertilization: whether flowers, perennials, Trees or houseplants: the product is completely harmless for children and pets and provides all plants with the necessary items Nutrients.

Dehner also does without animal raw materials in its organic fertilizers and instead relies on valuable ones Chicken manure made with vegetable matter and soil-living microorganisms from earthworm humus and mycorrhizal fungi was mixed. The NPK fertilizer can be used in a variety of ways for garden and potted plants, fertilizes vegetables and fruit plants as well as numerous ornamental plants. In addition, the natural fertilizer contains a high proportion of humus and other organic substances that stimulate soil life in the garden and thus regenerate even leached garden soil over time. However, the long-term effect is not as long as with other slow-release fertilizers: top-up fertilization is indicated as early as four weeks after planting and then again eight weeks later.

Purchase criteria

scope of application

Depending on the composition and the respective proportions of the main nutrients nitrogen, phosphorus and potassium, a distinction is made between various long-term fertilizers. The fertilizers presented here are so-called universal fertilizers that can be used for all plants. Other slow-release fertilizers, on the other hand, are special fertilizers that are used for vegetables and fruit, for the lawn, for perennials, woody plants or even indoor plants. These species have different nutrient compositions depending on the needs of the plant species.

Fertilizer form

Solid long-term fertilizer: Solid fertilizers are available in either granular or pellet form. They are easy to dose and are mostly used by slightly digging the fertilizer into the soil within the root area of ​​the too fertilizing Work in the plant and then water it vigorously. However, solid fertilizers can usually also be dissolved in water and used like a liquid fertilizer.

Liquid fertilizer: Liquid long-term fertilizers are mainly used for indoor and other container plants. These are highly concentrated fertilizers that are first diluted with the irrigation water and then applied.

Type of fertilizer

Organic fertilizer: Purely organic long-term fertilizers consist of 100 percent natural, organic ingredients. These have a natural long-term effect, as the fertilizer first has to decompose and gradually release the nutrients it contains. The disadvantage, however, is that the short-term treatment of deficiency symptoms is not possible.

Organic-mineral fertilizers: Organic-mineral fertilizers compensate for this shortcoming, as some nutrients are extracted from mineral components and are therefore immediately available for the plants.

NPK composition

The abbreviation “NPK” covers the three main nutrients for plants: nitrogen, phosphorus and potassium. How much of each there is in a slow release fertilizer depends primarily on the area of ​​application. Each group of plants or -art has its specific needs. For example, flowering plants need a higher proportion of phosphorus, as this stimulates flowering. Vegetable plants, on the other hand, have a higher need for nitrogen and potassium - the former ensures vigorous growth, while the latter ensures tasty fruit.

ingredients

In the case of fertilizers with organic components, it is advisable to take a closer look at the list of ingredients, because many conventional organic fertilizers are actually made from slaughterhouse waste - such as bone and Horn meal, Meatbone meal, hair and feather meal, etc. - manufactured. There is basically nothing wrong with this, as there are many valuable nutrients in these substances that are retained in the cycle and are not senselessly disposed of. However, some people value animal-free products: In this case, you should use additives such as "purely vegetable" etc. pay more attention.

frequently asked Questions

What is a slow release fertilizer?

Just like humans have to eat regularly, plants need a regular supply of nutrients. This is especially true for Potted plantsbecause they cannot take care of themselves in their cramped environment. A long-term fertilizer - also known as a depot fertilizer or permanent fertilizer - is a fertilizer that gradually releases the nutrients over a longer period of time. This has the advantage that you do not have to fertilize weekly.

When is the best time to apply slow release fertilizers?

When you apply the slow release fertilizer depends on the duration of the Fertilizing effect away. Some varieties only need to be applied once a year, others should be given to your plants two or even three times per season. The first fertilization always takes place in spring, usually between March and April. If necessary, a second dose is given in June and a third in early autumn. An exception is what is known as autumn fertilizer, which you only apply in autumn.

Which long-term fertilizer is best for my lawn?

Which long-term fertilizer is best for your race depends on the composition of the grass (ornamental lawn or play lawn?), the soil composition and the vegetation (a lot of moss and / or weeds)? For the latter, there are special long-term fertilizers with integrated weed and / or moss killers. Otherwise it helps to start with one Soil analysis and see what nutrients your lawn is now missing. Then adjust the fertilization accordingly.

How long does such a long-term fertilizer last?

There are different types of slow release fertilizers, the fertilizing effects of which are effective for different lengths of time. Some varieties only need to be administered once a season - usually in spring or, if it is an autumn fertilizer, also in autumn - or two to three times. Many of these fertilizers have a long-term effect of between three and five months, but some only last four to eight weeks.

Which manufacturers offer slow release fertilizers?

Basically, you do with tried and tested branded products such as Compo, Compo Bio, Plantura, Substral, Dehner or Wolf Garten nothing wrong: These manufacturers offer a large selection of tried and tested fertilizers with which your plants are well supplied are. You can of course also put together your long-term fertilizer yourself, for example from Horn shavings,(€ 32.93 at Amazon *) Compost, well-stored manure or self-made plant manure. The disadvantage here, however, is that you do not know the exact nutrient composition and this also fluctuates.

equipment

Horn shavings

Horn shavings(€ 32.93 at Amazon *) are a natural, purely organic long-term fertilizer with a high nitrogen content. These are mostly the crushed hooves or claws of cattle, which are mainly made of horn. Horn shavings provide the plants with valuable nutrients and also stimulate the soil life - those who use organic fertilizers also improve humus formation in the garden.