About Us

Prüfengel offers authentic consumer tests in which real users share their experiences with products. Our tests are based on practical applications in everyday life and reflect the opinions of consumers. As we focus on consumer tests, we do not carry out material, long-term or laboratory tests. Our aim is to provide honest feedback to help you make a purchasing decision. For a detailed insight into our comprehensive evaluation process, which forms the basis of all our product reviews, please click here.

Gartenkorn
Organic fertiliser & soil activator

The testing institute has thoroughly tested the organic complete fertiliser & soil activator from Gartenkorn. The sturdy cardboard box ensures excellent product protection and the sustainable packaging avoids unnecessary waste. The contents are complete and meet expectations, but a dosing aid would be desirable. The German instructions for use are clear and user-friendly. The appealing design and high-quality workmanship show careful manufacturing. The sturdy grains indicate a robust nature. The use of 100% vegan, sustainable ingredients and the organic certification emphasise the environmental friendliness of the product. The fertiliser has a barely perceptible odour and showed no changes in colour, odour or consistency after four weeks of storage. The full effectiveness on plants was retained. All tested plant species clearly benefited from the fertiliser treatment, showing higher growth, better leaf quality and no diseases or growth anomalies. The vitality of the plants was consistently excellent. Compared to the control group, the growth and health of the fertilised plants was significantly better, with no negative effects on soil moisture.

  • promotes growth
  • certified organic
  • Better plant growth
  • Dosing aid desirable

The test

General information

We took a close look at and tested the product in a practical test. In the following, we take a closer look at the features and impressions. From the packaging, materials and quality to the range of functions and handling, the product is subjected to our test procedure.

To give you a quick overview, we work with a points system. The maximum achievable score per area is 100 points. The final overall score is calculated from the average of all tested features, taking into account the respective weighting. For a detailed insight into our comprehensive evaluation process, which forms the basis of all our product ratings, please click here.

The first impression

Packaging and contents

Here we take a closer look at packaging. Sustainability is becoming an increasingly important factor. In addition, adequate protection of the product must of course also be guaranteed. Are the contents of the packaging complete and does the manufacturer make it as easy as possible for me to use the product straight away?

Here we take a closer look at packaging. Sustainability is becoming an increasingly important factor. In addition, adequate protection of the product must of course also be guaranteed. Are the contents of the packaging complete and does the manufacturer make it as easy as possible for me to use the product straight away?

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Product protection

Carton is sturdy, product sufficiently protected

100

Points

Sustainability Packaging

No unnecessary packaging waste was produced

100

Points

Package contents & scope

Complete, dosing aid desirable

90

Points

Instructions for use

written in German, easy to understand

100

Points

TOTAL

98

Points

Weighting: 20%
*Themaximum score is 100 points

Our testing institute has extensively tested the organic complete fertiliser & soil activator from Gartenkorn. The product protection of this product is excellent, as the sturdy cardboard box protects the product sufficiently. The sustainability of the packaging is particularly noteworthy: Gartenkorn has dispensed with unnecessary packaging waste, which is a positive aspect. The package contents and scope are complete and meet expectations, although a dosing aid would be desirable to make the application even more user-friendly. The instructions for use are in German and are clearly and comprehensibly formulated, which makes the product much easier to use. Overall, the organic complete fertiliser & soil activator from Gartenkorn proves to be a high-quality product in our tests, which not only impresses with its effective protective packaging, but also with its environmentally friendly design and user-friendliness. Gartenkorn attaches great importance to sustainability and user-friendliness, which is clearly reflected in this product.

In the very nice packaging

The first time in your hand

Product processing and appearance

Before we start the practical test, we take a close look at the workmanship of the products. How high quality are the materials used? Are the look and feel satisfactory?

Before we start the practical test, we take a close look at the workmanship of the products. How high quality are the materials used? Are the look and feel satisfactory?

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Visual appearance

Attractive design, beautiful packaging

100

Points

Processing

Very good workmanship

100

Points

Stability

Stable grains

100

Points

Sustainability of the product

100% vegan, sustainable ingredients, certified organic

100

Points

TOTAL

100

Points

Weighting: 20%
*Themaximum score is 100 points

On the ground, here together with lawn seed

The organic complete fertiliser & soil activator from Gartenkorn has an appealing design and attractive packaging. The workmanship of the product is of high quality and demonstrates careful production. The stability of the grains is remarkable, which indicates their robust nature. In terms of the product’s sustainability, Gartenkorn scores highly thanks to the use of 100% vegan, sustainable ingredients and its organic certification. These characteristics make the organic complete fertiliser & soil activator from Gartenkorn an environmentally friendly and responsible choice for gardening enthusiasts who value quality and sustainability.

This is what our practical test showed

Does the manufacturer keep its advertising promises?

Our practical test has the highest relevance and therefore weighting. Here, the product has to undergo a wide range of criteria and tests. We check the functions and product promises of the test article.

Our practical test has the highest relevance and therefore weighting. Here, the product has to undergo a wide range of criteria and tests. We check the functions and product promises of the test article.

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Odour test

Very pleasant odour, barely perceptible.

100

Points

Durability

After the four-week storage period, no changes in colour, odour or consistency were detectable under any of the three storage conditions (room temperature, low temperature and high temperature) and the samples retained their full efficacy on plants.

100

Points

Influence

All plant species tested benefited significantly from the fertiliser treatment in terms of both size and leaf quality. There were no signs of disease or growth anomalies, and the vigour of the plants was consistently excellent.

100

Points

Comparative growth with and without fertiliser

The fertilised plants showed a very large difference in growth and health, which was expressed in significantly higher growth, many leaves, numerous flowers and generally better vitality compared to the control group.

100

Points

Effects on soil moisture

No negative effects on soil moisture, optimum moisture values.

100

Points

TOTAL

100

Points

Weighting: 45%
*Themaximum score is 100 points

The organic complete fertiliser & soil activator from Gartenkorn has a very pleasant odour that is barely perceptible. After the four-week storage period under various conditions (room temperature, low temperature and high temperature), no changes in colour, odour or consistency were detected. The samples retained their full efficacy on plants. All tested plant species benefited significantly in both size and leaf quality from the fertiliser treatment. There were no signs of disease or growth abnormalities and the vigour of the plants was consistently excellent. The fertilised plants showed a very large difference in growth and health compared to the control group. This manifested itself in significantly higher growth, many leaves, numerous flowers and generally better vigour. No negative effects on soil moisture were observed; optimum moisture levels were maintained.

Uniform green, fast growth
Test plan of the Prüfengel Institute

A detailed insight into how the criteria were evaluated in the practical part of the test and how the points were distributed can be found here. If you are also interested in the evaluation of our other test criteria, read our document on the evaluation process.

Price/performance ratio

and ratings from consumers

Finally, we analyse how the product compares to the competition. Can it keep up with the competition in terms of price and quality? Would we generally recommend buying it? We also look at the consumer reviews and check whether the critical and positive reviews are actually justified.

Finally, we analyse how the product compares to the competition. Can it keep up with the competition in terms of price and quality? Would we generally recommend buying it? We also look at the consumer reviews and check whether the critical and positive reviews are actually justified.

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Price / performance ratio

Very good performance in the lower price segment

80

Points

Rating cut

At the time of testing, the product was not yet officially listed on Amazon. Therefore, the existing reviews do not sufficiently reflect the advantages and disadvantages of the product, so this point is neglected in the evaluation.

TOTAL

80

Points

Weighting: 15%
*Themaximum score is 100 points

Prices of up to €61 are charged on the Internet for equivalent products. Very cheap products are available from as little as €25 . The organic complete fertiliser & soil activator from Gartenkorn (for 150 m²) is therefore currently in the middle price segment with a price of €47.90. For the quality and performance received, the price-performance ratio is good.

Overall result

1. packaging & contents

20%

100

Points

2. product processing & appearance

20%

90

Points

3. in the practical test

45%

100

Points

4. price/performance & consumer reviews

15%

80

Points

TOTAL

97

Points

*Themaximum score is 100 points

Organic fertiliser & soil activator
of the brand
Gartenkorn
wasrated with an overall score of
1,2
and thus successfully qualified for our test seal. The test was carried out during the test period
06/24
and is storedinour database under the licence number
240426003
.Further information on our test procedure can be found at www.pruefengel.de/testverfahren.
Organic fertiliser & soil activator
of the brand
Gartenkorn
achieved
97
Points in our test and therefore passed. The test was carried out in the test period
06/24
and is stored in our database under the licence number
240426003
. Further information on our test procedure can be found at www.pruefengel.de/testverfahren.

The practical tests are based on careful observations and do not include long-term or laboratory tests. The test judgements reflect the personal impressions and opinions of the testers who try out the products in everyday use. We would like to emphasise that these evaluations do not claim to be exhaustive and may reflect both subjective and objective impressions. The evaluations are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a serious and thorough testing procedure, which has been developed in a long and professional process in close co-operation with our testers.

The practical tests are based on careful observation and do not include long-term or laboratory tests. The test ratings reflect the opinion of our experts and are based on careful analysis. We would like to emphasize that these evaluations do not claim to be exhaustive and reflect both subjective and objective impressions. The assessments are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a reputable and thorough testing process, which has been developed in a long and professional process in close cooperation with our experts.

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Evaluation process

You can find a detailed insight into our evaluation process, which forms the basis for our product ratings, here:

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Our product evaluations are carried out exclusively through direct, on-site tests. This ensures a detailed and specific examination of the product properties. You can find more information about the test procedure here.

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