High organic-matter content
A formula centred on organic nitrogen and soil improvement, in a quantity suited to larger requirements.
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When the garden is large, organic feeding needs a quantity that can genuinely cover its requirements. Biosol 25 kg provides organically bound nitrogen that becomes available gradually through soil life, while its high organic-matter content contributes to more humus, better structure and more effective water retention. It is the practical large pack for extensive beds, vegetable gardens, fruiting plants and lawns, without relying on numerous small packs.
Biosol is made from organic fungal biomass. Most of its nutrients are bound within the organic matter and released through the activity of soil organisms, instead of being supplied all at once with the first watering.
A formula centred on organic nitrogen and soil improvement, in a quantity suited to larger requirements.
The organically bound nitrogen is made available through soil microorganisms, providing a steadier supply than an immediately soluble fertiliser.
The high organic-matter content contributes to humus formation, a more stable soil structure and improved water retention and movement.
The 25 kg pack serves extensive areas and numerous plantings, allowing the same organic nutrition to be applied consistently across the whole garden.
It is particularly useful when you want organic nutrition with an emphasis on nitrogen and also need enough product to improve soil that is poor, tired or low in organic matter.
For flowering plants, herbs, shrubs and mixed planting schemes with numerous application points.
For tomatoes, peppers, potatoes, cucurbits, brassicas and other vegetables.
For fruit trees, citrus, vines, berries and other productive plantings.
For even distribution across lawns and extensive garden zones.
The pack is large, but application remains simple. Weigh the correct rate for each square metre or litre of growing medium, distribute it evenly and water afterwards.
Before planting, use 150–200 g per square metre and work the granules lightly into the upper layer of soil.
For plants with lower requirements, use 80–120 g per square metre, starting at the lower rate.
When preparing or refreshing the growing medium, mix 4–6 g of product into each 1 litre of growing medium and distribute it thoroughly throughout.
In poor or tired soil, you can add 50 g/m² after approximately 10 weeks. Spread over the surface, work in lightly and water.
Biosol is a granular soil fertiliser: do not dissolve it for root watering and do not spray it onto the leaves. Do not leave concentrated granules touching stems, the plant crown or young plants directly.
Actual coverage depends on the plants' requirements. At the lower rate, the pack covers up to 312.5 m², while at the maximum rate for hungry plants it covers 125 m².
Calculation basis: 25,000 g of product divided by the selected rate per square metre.
A practical quantity for large gardens, extensive beds, vegetable gardens, lawns and numerous fruiting plants.
They are easy to distribute and are applied directly to the soil. Light incorporation and watering help begin the gradual availability of nutrients.
Keep the pack tightly closed and dry, protected from moisture. Avoid creating dust during use and wash your hands when finished.
Biosol is a slow-release organic nitrogen fertiliser with a high organic-matter content and small supplementary amounts of phosphorus and potassium.
Do you not need a 25 kg quantity? The 1 kg pack provides the same Biosol in a size that is practical for beds, a few fruiting plants or refreshing potting mix.

Straightforward answers on the large pack, dosage, coverage and correct application.
It is suitable when feeding a large garden, extensive beds, a vegetable garden, a lawn or numerous fruiting plants and you need the same organic formula in a larger quantity. A separate 1 kg pack is available for smaller requirements.
Use 150–200 g per square metre before planting and work the granules lightly into the soil. In poor or tired soil, you can add 50 g/m² after approximately 10 weeks.
For flowers, herbs, salads and other plants with lower requirements, use 80–120 g/m², starting at the lower rate.
At a rate of 80–200 g/m², the pack covers from 125 to 312.5 m² per application. Final coverage depends on the plants' requirements and the rate you select.
Distribute the correct amount evenly around the plants without allowing the granules to touch stems or plant crowns. Work it very lightly into the upper layer of soil where practical and water thoroughly.
Keep the pack tightly closed in a dry place and protected from moisture. Avoid creating dust during application and wash your hands when finished.