fertilizer

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  • Two products from Bertels B.V., "Plagron Mega Worm", act as natural soil improvers in large white and purple bags and smaller purple containers that bear the brand's logo. They are additive substrate supplements rich in trace elements and enzymes.
    Up to 2% off
    Bertels B.V.

    Plagron Mega Worm - natural soil improvement

    From CHF 14.54
    From CHF 14.54 CHF 14.54
  • Two plastic containers with Plagron Bat Guano from Bertels B.V. are displayed, with the larger one standing behind the smaller one. Both have purple lids and labels with product information and trademarks.
    Up to 9% off
    Bertels B.V.

    Plagron asked Guano

    From CHF 13.23
    From CHF 13.23 CHF 14.53
  • The image shows a bottle of Plagron Seedbooster Plus 10ml from Bertels B.V. next to its purple-white packaging. This important additive promotes the rapid germination of young plants. Instructions in 12 languages are included with the packaging.
    Up to 8% off
    Bertels B.V.

    Plagron Seedbooster Plus 10ml - Fast germination | Pack (10 ml)

    CHF 14.64
    CHF 14.64 CHF 15.92
  • Two bags of Plagron Batmix from Bertels B.V. in green and purple packaging display the Batmix logo, are labeled as 100% natural, fertilized with peat types for improved plant growth, and available in various sizes with detailed information on the packaging.
    Up to 8% off
    Bertels B.V.

    Plagron Batmix

    From CHF 9.63
    From CHF 9.63 CHF 9.63
  • Shown are three containers of Plagron Pure Zym from Bertels B.V., a natural soil improver with enzymes. In the background is a large purple canister, in front of it a medium and a small bottle. Each bottle has a purple label with white text.
    Up to 1% off
    Bertels B.V.

    Plagron Pure Zym

    Only 28 left
    From CHF 5.71
    From CHF 5.71 CHF 5.71
  • A product image of a Plagron Cocos Premium 50L bag from Bertels B.V. mainly shows white packaging with purple and orange areas. It highlights that the bag is not fertilized, is ideal for hydroponic cultivation, and contains various symbols and product details.
    Up to 2% off
    Bertels B.V.

    Plagron Cocos Premium 50l - High quality coconut substrate | Sack (50 l)

    CHF 23.68
    CHF 23.68 CHF 24.17
  • The Plagron Top Grow Box 100% Natural by Bertels B.V. has a green-purple design, includes five bottles including "Alga Bloom", relies on natural ingredients, supports growth on over 1 m² and offers excellent organic fertilizers for complete nutrient supply.
    Up to 35% off
    Bertels B.V.

    Plagron Top Grow Box 100% Natural - Complete Grow Set | 1 piece

    CHF 29.76
    CHF 29.76 CHF 45.79
  • A bag of Plagron Europebbles from Bertels B.V. features a blue-white design with a purple top and the words "100% Hydro" and "Substrate, unfertilized." It contains pure, salt-free clay pebbles, ideal for hydroponic systems and plant cultivation.
    Bertels B.V.

    Plagron Europebbles - clay balls made of pure, salt -free tone

    From CHF 8.11
    From CHF 8.11 CHF 8.11
  • A box labeled “Plagron Seedbox – Compact Planting Set for Seedlings | 1 Piece” from Bertels B.V. contains a tray with compartments, a seed booster bottle, and descriptions in English, Dutch, and French on the packaging.
    Bertels B.V.

    Plagron Seedbox - compact planting set for seedlings | 1 piece

    Only 3 left
    CHF 21.40
    CHF 21.40 CHF 21.40
  • The image shows two containers of Plagron Calmag Pro from Bertels B.V. The larger one is a purple, square canister and the smaller one is a purple bottle. Both are labeled as "Supplement" in the "Universal" category and contain a calcium-magnesium formula for essential plant care.
    Bertels B.V.

    Plagron Calmag Pro

    From CHF 5.31
    From CHF 5.31 CHF 5.31
  • Two Plagron Silic Rock containers from Bertels B.V. are depicted: a large dark purple container on the left and a smaller bottle on the right, both labeled "Silicon fertilizer." Their purple labels with white text emphasize their role in improving plant resilience and nutrient uptake.
    Bertels B.V.

    Plagron Silic Rock - improves the absorption of nutrients

    Only 4 left
    From CHF 6.03
    From CHF 6.03 CHF 6.03
  • The image shows a white bag of Plagron Growmix 50 l – without perlite from Bertels B.V. with purple and pink accents and the inscription "Premium potting soil, pre-fertilized for 100% Terra fertilization, to ensure healthy plant growth".
    Bertels B.V.

    Plagron Growmix 50L - without Perlite | Bag (50 l)

    CHF 12.77
    CHF 12.77 CHF 12.77
  • The Plagron Easy Pack Natural by Bertels B.V. contains three bottles with green and purple labels for "Alga Grow" and "Alga Bloom" as well as a small measuring cup. It uses organic base fertilizers, ensuring precise plant nutrition in a compact package.
    Up to 35% off
    Bertels B.V.

    Plagron Easy Pack Natural - Compact plant food | 1 piece

    Only 14 left
    CHF 12.18
    CHF 12.18 CHF 18.74
  • The “Plagron Top Grow Box 100% Terra - Grow Set for Soil | 1 Piece” by Bertels B.V. includes bottles like “Terra Bloom” and “Terra Grow”. The box is designed in purple and pink and features text describing its properties and contents.
    Bertels B.V.

    Plagron Top Grow Box 100% Terra - Added for Earth | 1 piece

    CHF 40.34
    CHF 40.34 CHF 40.34
  • Five Plagron Green Sensation bottles from Bertels B.V. in various sizes enhance plant quality. The purple bottles with white caps and green-white labels improve harvest quality, with the largest one at the back.
    Bertels B.V.

    Plagron Hydro Roots

    From CHF 4.84
    From CHF 4.84 CHF 4.84
  • Schnelle Lieferung
    1-2 Tage Lieferzeit
  • Top Zufriedenheit
    4,9 von 5,0 Sternen
  • Sichere Bezahlung
    Zertifizierter Checkout
  • Professioneller Service
    Mo. - Fr.: 8:00 Uhr bis 18:00 Uhr

Fertilizer - for healthy growth and strong plants

A nutrient-rich soil is the foundation for vigorous growth, vibrant blooms, and a bountiful harvest. Fertilizer provides plants with exactly the nutrients they need for healthy development - from seedlings to full maturity. Whether in the garden, on the balcony, or in professional cultivation: The right fertilizer ensures optimal conditions and sustainably strengthens plants from within.

High-quality fertilizers not only improve nutrient supply but also soil structure. They promote root formation, increase resistance to diseases, and help maintain a balanced soil life in the long term.

 

This is what distinguishes high-quality fertilizer

A good fertilizer convinces with a balanced composition and easy application. Depending on the type of plant and season, plants require different nutrients - nitrogen, phosphorus, potassium, and trace elements are the most important building blocks.

In addition to classic mineral variants, organic and biological fertilizers are gaining importance. They act gently, promote soil life, and contribute to sustainable gardening.


Advantages of modern fertilizers at a glance:
  • Promote vigorous plant growth and root formation
  • Strengthen resistance to pests and diseases
  • Improve soil structure and nutrient absorption
  • Environmentally friendly and effective in the long term
  • Suitable for gardens, houseplants, and professional cultures

An example of natural plant nutrition is the liquid Neudorff Azet Universal Fertilizer, which contains all important nutrients and is suitable for almost all plants. The Neudorff Azet Citrus & Mediterranean Fertilizer ensures healthy leaves and aromatic fruits in Mediterranean plants with organic components. For sustainable soil revitalization, the Neudorff Sandy Soil Improver is recommended, which loosens the structure and improves water retention - ideal for sandy soils.


Application and practical tips for optimal fertilization

The correct application of fertilizer is crucial for success. Too much can harm plants just as much as too little. Therefore, the recommended dosage and the individual needs of the plants should always be considered.

Tip:

  • Spring: Initial fertilization for vigorous growth and new shoots
  • Summer: Subsequent fertilization to support flowering and fruit formation
  • Autumn: Potassium-rich fertilization strengthens plants for winter
  • Year-round: Liquid fertilizers or organic alternatives for potted and indoor plants

When applying, it is important to distribute fertilizer evenly in the root area and then water well. Liquid fertilizers can be conveniently administered through the irrigation water, while granules and pellets are ideal for beds or lawns.

Organic fertilizers work more slowly but more sustainably, as they enrich the soil with humus and promote natural soil life. This creates a healthy balance that ensures strong and resilient plants in the long term.


Sustainability Meets Effectiveness – Your Partner for High-Quality Fertilizers

Fertilizer is much more than a nutrient source – it is a key to sustainable plant care and healthy garden culture. With the right products, the balance between powerful supply and environmentally conscious action is achieved.

In addition to fertilizers, you will find many other product areas at Altruan that perfectly complement your gardening and care work:

Altruan stands for quality, sustainability, and expertise. With high-quality fertilizers and complementary accessories, you create ideal conditions for strong plants, blooming gardens, and healthy harvests – year after year.

Brands and categories in focus

Here you will find complementary products matching the current collection.

Why is fertilizer important for plants?

Fertilizer provides plants with essential nutrients such as nitrogen, phosphorus and potassium. These promote growth, flowering and fruit formation and prevent deficiency symptoms that can lead to weak or diseased plants.

What types of fertilizer are there?

There are mineral, organic and biological fertilizers. Mineral ones work quickly, organic ones promote long-term soil health. Biological fertilizers combine both advantages and are particularly environmentally friendly.

How often should you fertilize?

This depends on the type of plant and the season. In spring and summer, regular fertilization is usually carried out every two to four weeks. Houseplants can be supplied with liquid fertilizer at longer intervals all year round.

Are organic fertilizers better for the environment?

Yes, organic fertilizers are made from natural raw materials and sustainably promote soil life. They improve humus formation and reduce the risk of over-fertilization - ideal for ecologically conscious gardeners.