Osmo Pro 5-4-8 (+3)

Solid Fertilizer

Osmo Pro 5-4-8 (+3) is an organic plant based fertilizer that contributes to soil organic matter and soil fertility. The mix of organic raw materials makes for a sophisticated compound fertilizer with a controlled release of nutrients over time.

The period of releasing nutrients lasts from a minimum of 90 up until 120 days. Osmo Pro 5-4-8 (+3) is a fully plant based fertilizer. Due to the balanced amount of NPK, this fertilizer is a good basic fertilizer. Osmo Pro 5-4-8 (+3) can be used complementary with other fertilizers. The fertilizer contains a high proportion of magnesium. The addition of seaweeds results in positive effects on the photosynthesis. Seaweed can decrease plant stress.

This organic plant based fertilizer is certified for use in organic agriculture in compliance with EC 834/2007 and EC 889/2008.

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Product characteristics

Pellet diametercrumb 2-3 mm
Organic matter50%
Nitrogen (N total)5%
Nitrogen (N organic)5%
Fosforic acid anhydrid (P2O5) soluble in mineral acid4%
Potassium oxid (K2O) soluble in water8%
Magnesium oxid (MgO) soluble in mineral acid3%
Sulfur (S)3,2%
Calcium oxide (CaO)4%

Raw materials

Wheat middings
Rock phosphate

Unique characteristics

• Plant based fertilizer
• Strong effect on soil fertility
• Balanced NPK ratio

• High in magnesium
• Positive effect on photosynthesist

Dosage averages

Recommended dose50-150 g per m²


Storage in a well ventilated place away from moisture.


This product can be delivered as:
• 500 kg big bags
• 25 kg bags