Best Bio Rasendünger 2026

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Last Updated - 22.07.2026

Best Choice

01

COMPO

COMPO Organic Lawn Fertiliser 20 kg for 500 m² - Organic Lawn Fertiliser for Deep Green, Durable Lawn, Safe for Humans and Animals, with Microorganisms

22% Off

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9.8

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Year-round use in the garden - Organic lawn fertiliser for garden areas, young lawn plants, rolled lawns and new plants. Ideal as an organic lawn fertiliser in spring and during the season.
Visibly healthy lawns - Balanced nutrients ensure deep green, durable lawns. Live microorganisms promote soil life and root development.
Sustainable Compo quality: environmentally friendly organic lawn fertiliser with natural long-term effect. Quality control in the Compo home laboratory. Box contents: 20 kg for up to 500 m², item no. 25574
Purely organic and safe - Organic lawn fertiliser made from 100% natural ingredients. Safe for humans and animals, suitable for organic farming.
Easy and clean use - Dust-free fine granules for even distribution by spreader or by hand. Clean application deep into the sod.

44,99 € 57,99 €(22% Off off)
Value for Money

02

TURBOGRUEN

TURBOGRÜN Organic Lawn Fertiliser Spring, 17 kg for 200 m², Organic Lawn Fertiliser, Ideal for Spring and Summer, Suitable for Spreaders, Low-Dust Granules

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9.7

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Suitable for spring and summer: the organic fertiliser is ideal for the main growth phases in spring and summer to keep the lawn strong and healthy
Safe for children and pets: the Turbogrün organic fertiliser is safe as it is made purely from natural, plant ingredients.
Ideal for any lawn: The Turbogrün organic lawn fertiliser is perfect for all types of lawns and achieves a sustainable, rich green result.
Fine organic fertiliser: the organic lawn fertiliser can be optimally applied with the turbo green hand spreader or a spreader and ensures even nutrient distribution.
100% VEGAN & ORGANIC - The lawn fertiliser is made exclusively from plant ingredients and is completely organic.

41,99 €
03

COMPO

COMPO Organic Lawn Fertiliser, Natural Fertiliser for Lawns, Natural Instant and Long-Term Effect, Fine Granules, 3 kg, 75 m²

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9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

For a deep green, durable lawn: organic lawn fertiliser for a naturally balanced, gentle supply of nutrients over several weeks, ideal for young lawn plants, new lawns and turf lawns
Evenly, dust-free distribution of fertiliser grains, optimal root development and nutrient absorption thanks to natural soil organisms, strengthens resistance to diseases
Easy to use: even application of the fertiliser by hand or the spreader on the dry lawn without overlapping the tracks (1-2 days after mowing), then extensive irrigation
Box contents: 1 x Compo organic lawn fertiliser, natural fertiliser for lawns, natural immediate and long-term effect, fine granules, 3 kg, 75 m²
100% natural ingredients, suitable for organic farming according to EU Regulation 2018/848

16,99 €
04

Natureflow

Organic Lawn Fertiliser Summer Test Winner Made in Germany - 10.5 kg for 400 m² - Organic Lawn Fertiliser Organic for Healthy Soil & Rich Green Lawn - Fertiliser Lawn, Summer Fertiliser by Natureflow Garden

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9.3

Excellent

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Main highlights

Test winner and made in Germany - proven quality. Developed by the lawn professionals behind the best-selling lawn seeds from Natureflow Garden. Highest quality standards and sustainable formula for a dense, lush green lawn.
Safe for children and pets - 100% natural. Our fertiliser lawn is free from synthetic chemicals and harmless to children and animals. At the same time, it improves the soil structure and water retention through humus build-up.
Rich green and healthy soil - without chemicals. Our organic summer fertiliser relies on 100% plant ingredients, promotes soil life and strengthens the roots sustainably. Unlike chemical fertilisers, the lawn is not only supplied in the short term, but strengthened in the long term.
More nutrients, less stress for the lawn! The summer fertiliser ensures deep root growth and a permanent green colour, without risky salt pollution as with chemical fertilisers. This keeps your lawn resistant to dryness and diseases.
Gentle and effective - protects soil and the environment. Our organic lawn fertiliser organic releases nutrients slowly and as needed, avoids over-fertilisation and protects groundwater from nitrate pollution. Perfect for environmentally conscious gardening!

39,95 €
05

Terra Domi

TerraDomi Organic Lawn Fertiliser Summer 20 kg NPK Fertiliser 9+3+6 for 400 m²

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9.2

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Visibly denser, lush green lawn thanks to natural humus construction: organic lawn fertiliser, ideal for leached soils and patchy surfaces and without chemical additives or aggressive active ingredients.
Trust in +25 years of garden expertise: Since 1999, TerraDomi has stood for sophisticated solutions for garden care - for long-lasting quality, effective products and your perfect home.
No risk of over-fertilisation or burning: the lawn only absorbs what it really needs - especially gentle on sensitive soils and easy to use.
Long-lasting effect up to 6 months: saves time and effort as the lawn is continuously supplied with nutrients. Optimal organic summer fertiliser for garden lovers with little maintenance.
Child and animal friendly thanks to pure organic ingredients: animal-friendly lawn fertiliser for a safe, healthy environment in which family, pets and nature feel equally comfortable.

39,95 €
06

Natureflow

Organic Lawn Fertiliser Spring & Summer - Test Winner, Made in Germany - 10.5 kg for 400 m² - Organic Nutrient Supply for Healthy Soil and Dense, Rich Green

20% Off

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9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Visible results in 3-4 weeks - 80% organic substance: thanks to 80% organic matter, our formula strengthens roots and soil life sustainably. Nitrogen (N 7%) is released slowly - no burning, no over-fertilising, permanently lush green lawn.
Test winner made in Germany - NPK 7+2.5+1: [enter test source]. Developed in Germany. With optimised NPK ratio 7+2.5+1 for nitrogen, phosphate and potassium - perfect for spring supply.
Protects floor and ground water – subtle natural smell, hardly dust: our crumb granules are low in dust and have a subtle natural smell that settles quickly. Nutrients are naturally released - no nitrate washing into groundwater, no salt stress.
100% organic & chemical-free – safe for children and pets: our spring fertiliser is based on 100% plant ingredients (corn, cereals) without synthetic chemicals – immediately after watering, safe for playing children and animals. For a healthy soil without salt stress.
1 PACK FOR [80 / 350 / 600] m² - SPREADY TO SPREAD: Apply 25-35 g/m² evenly, water - done. Ideal for lawns from the first thaw to May. Nutrients are gently released - no stress caused by over-fertilisation.

39,95 € 49,95 €(20% Off off)
07

Veddelholzer

Veddelholzer Comparison Winner 2021 Organic Lawn Fertiliser 3 Months Long-Term Effect High Nitrogen Content for Spring and Summer, Low-Dust Granules, Safe for Pets, Long-Term Fertiliser, Lawn Fertiliser

24% Off Limited Time Deal

24% Off

Limited Time Deal

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8.8

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Rich regeneration: Vital nutrients, enzymes and sugars of our organic lawn fertiliser ensure healthy soil life and revitalise heavily stressed and depleted areas. Thanks to the good nutrient supply and loosening of the soil with the organic lawn fertiliser, water can be stored for longer and prolonged dry periods are survived.
Instructions for use: Our organic fertiliser can be used all year round for new plants and in existing areas from March to October. Approximately 200m² of lawn can be fertilised with 10.5 kg. Spread the bio-fertiliser on the dry lawn 1 to 2 days after mowing. Fertilise in March / April and in June / July about 30 g per square metre. Increase to 3 applications on growing and intensive surfaces. Last application should be no later than the beginning of October.
Extensive effectiveness: Nitrogen is considered to be the engine of lawn growth. The high nitrogen content of our organic lawn fertiliser ensures both short-term and lasting effects: While about 50% of the nitrogen is effective in the first two weeks, the other 50% is released later and enables a balanced fertilisation and long-term effect.
Direct use: Over-fertilisation is impossible with our organic lawn fertiliser. In addition, children and pets can walk on your lawn as soon as the easily water-soluble and pleasantly scented granules have dissolved after watering.
2021 Competition Winner: Test the comparison winner (grade 1.5). Our organic fertiliser made exclusively from vegetable raw materials works and has a lasting effect on all sports and ornamental lawns. The fertiliser symbioses with your soil to form humus in a short time and, by loosening the soil layer, enables the roots to grow quickly and thrive.

25,45 € 29,95 €(24% Off off)
08

Natureflow

Organic Lawn Fertiliser Spring & Summer Test Winner Made in Germany - 2.5 kg for 100 m² - Organic Lawn Fertiliser Organic for Healthy Soil & Lush Green Lawn - Fertiliser Lawn, Spring Fertiliser

17% Off

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8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Visible results in 3-4 weeks - 80% organic substance: thanks to 80% organic matter, our formula strengthens roots and soil life sustainably. Nitrogen (N 7%) is released slowly - no burning, no over-fertilising, permanently lush green lawn.
Test winner made in Germany - NPK 7+2.5+1: [enter test source]. Developed in Germany. With optimised NPK ratio 7+2.5+1 for nitrogen, phosphate and potassium - perfect for spring supply.
Protects floor and ground water – subtle natural smell, hardly dust: our crumb granules are low in dust and have a subtle natural smell that settles quickly. Nutrients are naturally released - no nitrate washing into groundwater, no salt stress.
100% organic & chemical-free – safe for children and pets: our spring fertiliser is based on 100% plant ingredients (corn, cereals) without synthetic chemicals – immediately after watering, safe for playing children and animals. For a healthy soil without salt stress.
1 PACK FOR [80 / 350 / 600] m² - SPREADY TO SPREAD: Apply 25-35 g/m² evenly, water - done. Ideal for lawns from the first thaw to May. Nutrients are gently released - no stress caused by over-fertilisation.

24,95 € 29,95 €(17% Off off)
09

Plantura

Plantura Organic Lawn Fertiliser, 3 Months Long-Lasting Effect, Low-Dust Granules, 250 m², 10.5 kg

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8.4

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

The easy to apply granules (by hand or spreader) do not smell; 10.5 kg is enough for an area of 250 m².
Safe for home and garden animals, even children can play on the lawn immediately after fertilisation.
Our organic Plantura organic lawn fertiliser is made from natural raw materials and has an NPK ratio of 5–1–6.
Approved for organic farming, organic and completely does not contain animal raw materials.
3-month long-term effect and optimal supply with all important nutrients, for healthy and lush green lawns without moss in spring and summer.

34,99 €
10

COMPO

Compo Long-Term Lawn Fertiliser, 3 Months Long-Term Effect, Fine Granules

16% Off

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8.3

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

NPK Lawn Fertilizer for a Robust and Deep Green Law: all nutrients in a fertilizer grain, each fertilizer grain contains the main nutrients nitrogen, phosphate and potassium, even lawn growth
Lawn fertiliser for spring: ideal for the start of the season, new lawns or reseeding, even lawn growth thanks to the finest granules, quick dissolution thanks to homogeneous granules
For a dense, green lawn: premium lawn fertiliser, 3 months long-term effect, for ornamental, sports and play lawn, animal-friendly lawn fertiliser, dense lawn instead of moss and weeds
Easy to use: apply Compo lawn fertiliser by hand or spreader, water the lawn, after applying the lawn fertiliser, the lawn can be entered directly by children and animals
Box contents: 1 x Compo lawn long-term fertiliser, up to 3 months long-term effect, 20 kg sufficient for 800 m², item number: 13112

41,99 € 49,99 €(16% Off off)