fertilizer

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  • The image shows a white 50-liter bag of Plagron Growmix—without perlite—from Bertels B.V., featuring purple and pink accents and the label “Premium potting soil, pre-fertilized for 100% Terra fertilization to ensure healthy plant growth.”
    Up to 1% off
    Bertels B.V.

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

    CHF 24.75
    CHF 24.75 CHF 25.00
    CHF 0.50 l
  • Two containers of Plagron Vita Race by Bertels B.V., designed to stimulate leaf growth, include a dark purple, cube-shaped jug and a smaller bottle with a white cap. Both have purple labels with green accents—perfect for the growth phase.
    Bertels B.V.

    Plagron Vita Race - stimulates the leaf green

    From CHF 7.91
    From CHF 7.91 CHF 7.91
    CHF 79.10 l
  • The Plagron NextGen Growplug from Bertels B.V. features 84 soil-filled compartments enriched with coconut coir to promote better root development. It has a grid design that is ideal for planting and features an eye-catching product information label on the surface.
    Bertels B.V.

    Plagron Nextgen Growplug - root pathogen | Pack (84 pieces)

    Only 10 left
    CHF 15.98
    CHF 15.98 CHF 15.98
  • A rectangular container of Plagron Supermix—a natural fertilizer from Bertels B.V. with a purple-and-white label bearing the words “Universal” and “Substrate Supplement”—improves soil quality for optimal plant growth and features a convenient handle for easy handling.
    Bertels B.V.

    Plagron supermix - natural fertilizer

    Only 13 left
    From CHF 11.45
    From CHF 11.45 CHF 11.45
    CHF 11.45 l
  • Against a white background, two containers of Plagron Lemon Kick pH regulator by Bertels B.V. are shown: The larger one is a dark purple canister, and the smaller one is a matching bottle; both are labeled with the product name and a description in white lettering.
    Bertels B.V.

    Plagron Lemon Kick PH controller

    Only 7 left
    From CHF 4.75
    From CHF 4.75 CHF 4.75
    CHF 19.00 l
  • The Plagron Cocos Brix package from Bertels B.V. contains six high-quality coconut coir blocks. The transparent plastic packaging with a handle is labeled “100% coconut coir,” “unfertilized,” and bears the RHP quality mark for premium growing media.
    Bertels B.V.

    Plagron Cocos Brix - High quality coconut tiles | Pack (6 pieces)

    Only 2 left
    CHF 17.73
    CHF 17.73 CHF 17.73
  • Plagron Lightmix 50L – Without Perlite for Pure Soil by Bertels B.V. is a 50-liter patio growing medium packaged in a purple-and-white bag with a red section that highlights the product name; it offers customizable fertilization options as well as optimal air and oxygen levels.
    Bertels B.V.

    Plagron Lightmix 50l - without a perlite for pure earth | Sack (50 l)

    CHF 22.48
    CHF 22.48 CHF 22.48
    CHF 0.45 l
  • Three cylindrical packages of Plagron Cocos Slab by Bertels B.V. are stacked horizontally and bear the RHP quality mark. The packaging is predominantly white with orange and purple accents, and the product name is printed in bold.
    Bertels B.V.

    Plagron Cocos Slab - High-quality coconut coir substrate for plants | Package (20 l)

    CHF 7.77
    CHF 7.77 CHF 7.77
    CHF 0.39 l
  • A rectangular 10-kg plastic container from Bertels B.V. labeled “Plagron Calcium Kick” has a purple lid and a gradient-colored handle; this mineral soil conditioner improves soil structure and acts as a pH regulator.
    Bertels B.V.

    Plagron Calcium Kick 10kg - mineral soil improvements | Bucket (10 kg)

    CHF 32.25
    CHF 32.25 CHF 32.25
    CHF 3.23 kg
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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.

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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.