fertilizer

91 products

  • Two containers of Plagron Vita Race from Bertels B.V. for stimulating 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.
    Vendor:
    Bertels B.V.

    Plagron Vita Race - stimulates the leaf green

    Regular price From ¥1,378 JPY
    Sale price From ¥1,378 JPY Regular price ¥1,378 JPY
  • Plagron Easy Pack Terra from Bertels B.V. contains 100% mineral-based fertilizer in the bottles "Terra Grow", "Terra Bloom", and "Green Sensation". A measuring cup is also included and promises improved flowering, resilience, soil health, and yield increase.
    Vendor:
    Bertels B.V.

    Plagron Easy Pack Terra - complete fertilizer for plants | 1 piece

    Only 22 left
    Regular price ¥2,609 JPY
    Sale price ¥2,609 JPY Regular price ¥2,609 JPY
  • Against a white background, two containers with Plagron Lemon Kick pH regulator from Bertels B.V. are depicted: The larger one is a dark purple canister, the smaller one is a matching bottle, both labeled with the product name and a description in white lettering.
    Vendor:
    Bertels B.V.

    Plagron Lemon Kick PH controller

    Regular price From ¥801 JPY
    Sale price From ¥801 JPY Regular price ¥801 JPY
  • A rectangular container with Plagron Supermix – natural fertilizer from Bertels B.V. with a purple and white label featuring the words “Universal” and “Substrate Supplement” improves soil quality for optimal plant growth and has a convenient handle for easy handling.
    Vendor:
    Bertels B.V.

    Plagron supermix - natural fertilizer

    Regular price From ¥1,959 JPY
    Sale price From ¥1,959 JPY Regular price ¥1,959 JPY
  • The Plagron NextGen Growplug from Bertels B.V. features 84 compartments filled with soil, enriched with coconut fibers for better root formation. It has a grid design that is ideal for planting and is equipped with a striking product information label on the surface.
    Vendor:
    Bertels B.V.

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

    Regular price ¥2,476 JPY
    Sale price ¥2,476 JPY Regular price ¥2,476 JPY
  • A box of Neudorff's UrgesteinsMehl from the Neudorff Shop stands upright and displays pictures of hydrangeas, apples, and grass. The 2.5 kg package is sufficient for 25 m² and is intended to improve soil fertility.
    Vendor:
    Neudorff Shop

    Neudorff's UrgesteinsFlour

    Regular price From ¥1,753 JPY
    Sale price From ¥1,753 JPY Regular price
  • A green plastic bottle from Neudorff Shop Azet Green Plant Fertilizer liquid with a yellow cap, labeled as 100% organic vegan fertilizer for green plants, provides essential nutrients and has a recycling symbol with German text.
    Vendor:
    Neudorff Shop

    Azet green plant fertilizer liquid

    Regular price From ¥1,340 JPY
    Sale price From ¥1,340 JPY Regular price
  • A box of Azet fertilizer sticks for orchids from Neudorff Shop, labeled as 100% organic, contains 40 sticks, features German text, displays exotic blooms, and the yellow Neudorff sunflower logo.
    Vendor:
    Neudorff Shop

    Azet fertilizer sticks for orchids

    Regular price ¥1,299 JPY
    Sale price ¥1,299 JPY Regular price
  • Front view of a box of Neudorff Shop Azet Fertilizer Sticks for flowering plants with flower illustrations, product information, a label for 40 sticks, and packaging in yellow with green and red accents.
    Vendor:
    Neudorff Shop

    Azet fertilizer sticks for flowering plants

    Regular price ¥1,299 JPY
    Sale price ¥1,299 JPY Regular price
  • The Plagron Lightmix 50L – Without Perlite for pure soil by Bertels B.V. is a 50-liter terrace substrate in a purple-white bag with a red area that highlights the name and offers individual fertilization options as well as optimal air and oxygen values.
    Vendor:
    Bertels B.V.

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

    Regular price ¥3,743 JPY
    Sale price ¥3,743 JPY Regular price ¥3,743 JPY
  • 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 in bold.
    Vendor:
    Bertels B.V.

    Plagron Cocos Slab - high -quality coconut substrate for plants | 1 piece

    Regular price ¥1,070 JPY
    Sale price ¥1,070 JPY Regular price ¥1,070 JPY
  • The Plagron Cocos Brix package from Bertels B.V. contains six high-quality coconut substrate blocks. The transparent plastic packaging with handle bears the labels “100% Coconut,” “unfertilized,” and the RHP quality mark for premium substrate.
    Vendor:
    Bertels B.V.

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

    Regular price ¥2,836 JPY
    Sale price ¥2,836 JPY Regular price ¥2,836 JPY
  • A 10-kg bag of Neudorff Shop Bentonite Sand Soil Improver covers 200 m², is ideal for sandy soils, and features packaging with pink flowers and a close-up of the mineral-rich contents.
    Vendor:
    Neudorff Shop

    Bentonite sandy soil improver

    Regular price From ¥3,818 JPY
    Sale price From ¥3,818 JPY Regular price
  • A green plastic bottle of Neudorff Shop Balsamol foliar fertilizer with a yellow cap; suitable for 80 L, ideal for conifers and evergreens, and made from 90% recycled plastic.
    Vendor:
    Neudorff Shop

    Balsamol foliar fertilizer

    Regular price ¥3,095 JPY
    Sale price ¥3,095 JPY Regular price
  • Neudorff Shop Nettle Pellets are an effective plant tonic that provides 330 L of nettle slurry to support the growth of ornamental plants, fruits, and vegetables. The packaging shows images of flowers, fruits, and vegetables.
    Vendor:
    Neudorff Shop

    Nettle pellets

    Regular price ¥3,095 JPY
    Sale price ¥3,095 JPY Regular price

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.

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.