Organic fertiliser products
Organic fertiliser products for crop nutrition
SoilWorx manufactures a full range of organic and natural fertilisers for crop nutrition, each designed to feed your crops while building long-term soil health. Produced at the UK and Ireland’s largest organic fertiliser plant, every product is heat-treated and sterilised to eliminate pathogens, weed seeds and odour: delivering consistent, predictable nutrition from bag to field.
Our organic crop nutrition pellets are manufactured from sustainably sourced poultry manure, delivering up to four times the nutrient density of standard compost with 75%+ organic matter content. Products are OMRI Listed and Organic Trust certified (where indicated), easy to handle, and compatible with conventional spreading equipment.
Use our Fertiliser Calculator to determine the right application rate for your crop and soil type.
Agricultural fertilisers for crop nutrition
Formulated for arable, grassland, horticulture and mixed farming. Available in 600 kg bulk bags and 25 kg polymer bags. View the full agricultural range.
NPK 4-2-3
Our flagship organic NPK fertiliser and soil improver. High in organic matter (75.6%) with a full spectrum of trace elements. OMRI Listed and Organic Trust certified. Applied at sowing as a controlled-release base dressing.
Pack sizes
25 kg, 600 kg, 1,250 kg
Certifications
OMRI Listed, Organic Trust
NPK 3-2-17
High-potassium organic fertiliser blending poultry manure with sulphate of potash. Formulated for fruit, potatoes, root vegetables and crops requiring elevated potassium for yield, tuber quality and disease resistance. Organic Trust certified.
Pack sizes
25 kg, 600 kg, 1,250 kg
Organic matter
52.9%
Certification
Organic Trust
NPK 8-2-2
High-nitrogen organic fertiliser with 77% organic matter, delivering sustained nitrogen release for demanding crops. 100% sustainably sourced poultry manure. Ideal for grassland, cereals and brassicas where nitrogen uptake drives performance. Organic Trust certified.
Pack sizes
25 kg, 600 kg, 1,250 kg
Organic matter
77%
NPK 13-0-0
Slow-release organic nitrogen source derived from hydrolysed poultry feathers. High protein content delivers sustained nitrogen availability across the growing season. Suitable for organic and conventional systems. Organic Trust certified.
Pack sizes
25 kg, 600 kg, 1,250 kg
K2O 50%
Chloride-free potassium source for crops sensitive to chloride, such as potatoes, soft fruit and vegetables. Low salt index reduces risk of root damage. Available as a standalone product or blended into custom formulations.
Pack sizes
25 kg, 600 kg, 1,250 kg
Nitrogen only
Liquid organic nitrogen solution for foliar application or fertigation. Rapid uptake for crops requiring a fast nitrogen boost during the growing season.
Pack sizes
IBC / bulk tanker
Amenity fertilisers
Engineered for professional turf management, sports pitches, golf courses, amenity grassland and public green spaces. Hybrid pellet and crumb formulations for even distribution and phased nutrient release. View the amenity range.
NPK 10-1-10
Hybrid pellet and crumb fertiliser combining mineral and organic sources for sustained turf growth. Phased nutrient release supports consistent colour, density and root development throughout the growing season.
NPK 6-10-2
High-phosphorus hybrid fertiliser for turf establishment, renovation and root development. Ideal for newly seeded or turfed areas where rapid root establishment is essential.
Our retail products bring professional-grade organic nutrition to gardeners, smallholders and allotment growers. Available through garden centres, agricultural merchants and online retailers across the UK and Ireland.
NPK 4-2-3
Heat-treated, low-odour chicken manure pellets. 75%+ organic matter, OMRI Listed. Easy to spread by hand or with a broadcast spreader. The natural, slow-release alternative to synthetic garden fertilisers.
Pack sizes
10 kg to 25 kg
NPK 3-2-3
A unique blend of poultry manure and seaweed extract, combining sustained NPK nutrition with the natural growth stimulants, trace elements and alginates found in seaweed. Ideal for vegetables, fruit and flowers.
Pack sizes
10 kg only
NPK 5-3-3
Traditional blood and bone formulation enriched with poultry manure for a balanced, slow-release feed. Excellent for border preparation, vegetable beds and established plantings.
Pack sizes
10 kg only
NPK 6-4-1
Finely ground organic bone meal providing slow-release phosphorus for root development, bulb planting and perennial establishment. A natural source of calcium for soil conditioning.
Pack sizes
10 kg only
Need a bespoke blend? SoilWorx operates the UK and Ireland’s largest organic fertiliser plant with capacity exceeding 50,000 tonnes per year. Our fully automated production line ensures batch-to-batch consistency for custom NPK formulations, contract manufacturing, and white-label partnerships.
Learn about custom manufacturing or contact our team to discuss your requirements.
Not sure which product is right?
Use our Fertiliser Calculator to match your crop, soil type and growth stage to the ideal SoilWorx product. For trade enquiries and bulk pricing, contact our team. Or speak to your agronomist or qualified adviser.