Granular Fertiliser

GreenBest specialises in fertilisers and soil conditioners for the amenity turf, sports turf, lawn-care and landscaping markets. Our products are also used in agriculture, horticulture, viticulture, hydroseeding, green walls, green roofs and more. GreenBest granular fertiliser is in high demand for prestige landscaping and turf applications worldwide and is used in many top golf, football and sports pitches.

Granular fertilisers are usually applied with a fertiliser spreader. We manufacture and supply a huge range of organic and mineral fertilisers as well as biostimulants and micronutrients.


"Because we make own-label products you may not have seen our name on the bag, but it's likely you have seen turf treated with GreenBest's products!"


organic, NPK and mineral fertiliser suppliers and manufacturers

Premium quality ingredients

Quality grading and dust reduction

Experts in smart fertiliser design

Superior customer service


Capability to meet any requirement large or small

Added value improvements to familiar formulations

Ability to replicate products on the market

No minimum order



How to use GreenBest as your granular fertiliser supplier

NPK, mineral & organic fertilisers

GreenBest can manufacture spreadable granular fertilisers to a bespoke formulation for you. We can manufacture a huge range of N-P-K products.

On this page you will also find a large range of organics, biostimulants and micronutrients that may be added to your product to improve the performance of your granular fertiliser.

All products can be supplied in your own-brand.

Choose from bags and tubs in a large range of sizes and colours.

Products can usually be formulated or modified to your requirements.

Most products are available in a variety of grades.

Please get in touch for friendly helpful advice. 


phone: 01963 364 788


GreenBest NPK fertiliser suppliers

N-P-K fertilisers.

GreenBest organic fertiliser suppliers

Organic Based fertilisers.

GreenBest Soil amendment and soil conditioners

Soil amendment and soil conditioners to modify and improve soil properties.

Onyx organic biostimulant fertiliser suppliers

Onyx organic biostimulant fertiliser delivers nitrogen, potassium and trace elements.

Black & Green iron & magnesium fertiliser suppliers

Granular fertiliser containing high levels of iron and magnesium.

XCU slow release PSCU fertiliser suppliers

XCU is a controlled release polymer-sulphur coated urea (PSCU). 

Polyon controlled release fertiliser suppliers

POLYON controlled-release fertilisers encapsulate nutrients within a patented polyurethane membrane, feeding the root zone slowly.

Controlled release coated fertilisers for golf and amenity turf


Controlled release nitrogen fertilisers with precision coatings for reliable release of nutrient.

Nutralene - controlled release MU based fertiliser suppliers

Slow-release methylene urea (MU) based fertilisers.

Nitroform - controlled release nitrogen fertiliser suppliers

NITROFORM slow-release urea-formaldehyde (UF) nitrogen fertiliser.

NMAXX - stabilised nitrogen fertiliser suppliers

NMAXX is a stabilised nitrogen fertiliser that contains urease and nitrification inhibitors.

Range Icons

  Range: Regular products or part of a named range. These products can be supplied in your own brand and the formulation can usually be modified if required.

  Straight: Products available on their own, as a single component with nothing added. 

  Ingredient: These products are available to combine or add to a bespoke product where compatible.



Granular Fertiliser Grading

We expertly sort and grade our granular fertiliser to suit the most technical turf requirements. Providing products for excellent coverage, uniformity and penetration through the sward.


fine grade fertiliser manufacturers & suppliers


Fine Fertiliser:

<0.5mm Sand Grade


Typically mixed with sand to create lawn sand.

Suitable for grass cut to 3mm or above.



mini grade fertiliser manufacturers & suppliers


Mini Granular Fertiliser:

0.7-1.9mm. 150 SGN


Ideal for greens, lawns and any close-cut turf.

Ensures the highest coverage and uniformity.

Effectively penetrates the sward. 

Suitable for grass cut to 3mm or 




graded fertiliser manufacturers & suppliers


Graded Fertiliser:

1.9-2.9mm. 250 SGN


Provides a greater economy than Mini and still provides effective coverage.

Ideal for lawns, parks, and less technical turf applications.

Suitable for grass cut to 10mm or above.




Common NPK Granular Fertiliser Range

Our standard range includes common product formulas for a range of applications and markets.

They can be bought as standard products or they may serve as a base to be modified to your requirements. Like all of our products they can be supplied in your own-brand packaging. 


GreenBest standard range NPK fertiliser suppliers

 Common Granular Fertilisers


Spring/Summer Season

Mini 1-2mm


13-2-13 100% Ammonium Sulphate


NPK + Iron

10-0-0 8% Fe High Iron (100% Ammonium Sulphate)
10-0-10 +2% Fe
12-0-8 +2% Fe
12-0-9 +Fe
14-0-0 8% Fe High Iron
20-0-0 +Fe
7-7-7 + 2Fe
8-0-0 +2% Fe
8-0-0 +4% Fe
9-0-0 +4% Fe


NPK + Iron + Magnesium

12-0-12 + 2% Fe + 3.3% Mg
12-0-9 + 2% Fe + 2% Mg
12-0-9 +0.5% Mg +1% Fe
12-0-9 +1.5% Fe +0.5% Mg + Seaweed
12-2-15 +2% Fe +Mg
12-3-9 +1% Fe +0.5% Mg
12-5-5 + 2%Fe + 1% MgO
14-0-7 +2% Fe +2% Mg Zero Phosphate
14-3-3 + 2% Fe + 1% Mg
24-0-0 +2% Fe
7-0-0 +2% Fe +1% Mg Turf Tonic
7-0-7 + 3% Fe + 2% Mg
8-0-0 + 4% Fe + 2% Mg + Seaweed Extract

GreenBest standard range NPK fertiliser suppliers


 Common Granular Fertilisers


Autumn/Winter Season

Mini 1-2mm


0-0-30-15S Pot Sulphate
0-0-50 100% Pot Sulphate
3-10-5 Seed Starter

NPK + Iron

2.1-0-2.5 +3% Fe
3-0-8 +3% Fe
3-6-8 +4% Fe
4-0-10 +2% Fe
4-0-14 +2% Fe 
4-0-4 +4% Fe
4-0-9 +4% Fe
4-3-8 +2% Fe
4-6-8 +2% Fe + Seaweed
4-6-8 +4% Fe
5-0-10 +2Fe
6-0-10 +2% Fe
6-4-10 +2% Fe
6-5-10 +6% Fe
6-8-10 +2% Fe
7-0-14 + 4% Fe

NPK + Iron + Magnesium

3-0-12 + 2% Fe + 1% Mg Turf Hardener
3-0-3 +4% Fe +2% Mg Turf Hardener
4-0-8 + 4% Fe + 2% Mg
4-2-8 + 2% Fe + 1% Mg
6-0-9 +2Mg +2Fe
7-0-14 +2Fe +2Mg

Lawn Sand

3-0-0 + 3% Fe Lawn Sand


GreenBest standard range fertiliser suppliers

Common Granular Fertilisers


Spring/Summer Season

Graded 2-3mm


9-3-7 Outfield

9-5-7 Outfield

9-7-7 Outfield

6-9-6 Pre-Seeding

20-10-10 Outfield

12-0-9 Outfield

10-12-8 Outfield

10-15-10 Sportsfield

7-7-7 Outfield

12-6-6 Outfield

12-3-6 Outfield

10-10-10 Outfield

GreenBest standard range fertiliser suppliers

Common Granular Fertilisers


Autumn/Winter Season

Graded 2-3mm


3-12-12 Outfield

3-6-12 Outfield

3-3-12 Outfield

4-12-15 Outfield

5-0-20 Outfield

4-19-10 +8% Mg High Mag. Slow-Release (For Trees & Shrubs)




COMPLEX - NPK fertiliser suppliers

COMPLEX 12-11-18 +2.6%MgO

COMPLEX (12-11-18 + 2.6%MgO + 20% SO3) is a high quality, homogeneous prilled NPK fertilizer which also contains magnesium and sulphur as well as micronutrients.

Manufactured using a unique nitrophosphate production process, 100% SOP based and chlorine free, rapid nutrient release, excellent handling characteristics and dust free.




Iron Fertilisers

Iron is a crucial plant nutrient that is often present in soils but may be unavailable to plants leading to iron deficiency. Supplementing with spreadable granular iron fertilisers can lead to increased yields, greener leaves and improved uniformity. Other methods may include spraying with iron sulphate or chelated iron.


Black & Green High Iron Fertiliser for Turf

BLACK & GREEN IRON + MAGNESIUM Granular Fertiliser

GreenBest Black & Green is a powerful homogenous fertiliser granule containing high levels of iron and magnesium. (12%Fe, 5%MgO) 

Very effective for improving turf colour.

High application rates will darken the sward and turn the moss black - hence the name! 

12%Fe 5%MgO

Black & Green Fast Release Granular Turf Hardener 

2.5-0-10 9%Fe

Slow Release Granular Turf hardener 3-4 Months

10-0-10 9%Fe

Cold Start Slow release Granular Fe 2-3 months

5-0-0 9%Fe

Fast Release Granular Turf Hardener

0-0-0 9%Fe

Fast Release Homogenous Granular Turf Hardener




Organic Fertilisers and Biostimulants

Our organic based biostimulant fertilisers and additives provide nutrients that can help promote growth and condition against stress. Organic nutrient sources provide a slow release and stimulate biological activity in the soil.


Standard Organic Fertiliser Range

12-2-9 +2%MgO +2%Fe, 25%NMAXX

Organic based mini grade for fine turf 150sgn


GreenBest organic fertilizer suppliers & manufacturers



Standard Range


The standard range includes common product formulas for a range of applications and markets.


They can be bought as standard products or they may serve as a base to be modified to customer requirements. Like all of our products they can be supplied in your own-brand packaging.


Standard Organic Fertiliser Range

12-2-9 +2%MgO +2%Fe, 25%NMAXX

Organic based mini grade for fine turf 150sgn


Organic Biostimulant Fertilisers

Our organic based biostimulant additives provide nutrients that can help promote growth and condition against stress.

Organic nutrient sources provide a slow release and stimulate biological activity in the soil.

Organic and biostimulant fertiliser manufacturer


Derived from Ascophyllum nodosum, our seaweed meal is an effective bio-stimulant containing balanced quantities of N, P, K, S, Ca, Fe, Cu, B, Mn, Mg, Growth promoters and 17 amino acids.







Onyx organic biostimulant fertiliser is an organic source of nitrogen, postassium, trace elements and significant levels of amino acids.

A biostimulant helps regulate or enhance the natural processes that occur in the plant or soil, improving the plants ability to take up or use nutrients and improving its resistance to stress.

Onyx has an NPK analysis of 10-0-4

Rich in amino acids

Organic source of macro and micro nutrients

Enhances seed germination

Improves root growth

Promotes beneficial bacteria

Conditions against stress



Onyx organic biostimulant fertiliser granules supplier

Take a look through our online leaflet below





Soil Amendment and Soil Conditioners

A range of products that can have a beneficial effect on the soil, from modifying pH to adjusting cation exchange capacity and improving soil structure.


Greenbest Soil and pH amendment and soil conditioners


Soil Amendment and Soil Conditioners

Granular Lime (Calcium carbonate)

Spreadable ph adjustment 


Granular Gypsum (Calcium sulphate)




Gypsum + Seaweed


Lime + Seaweed





Coated Controlled Release Fertilisers

Coated fertilisers are standard release granules coated in one or more protective layers. Before the nutrients become available to the plant, water must diffuse though the coating, dissolve the nutrient and diffuse out again. Our coated ureas are typically based on urea with a sulphur (SCU), polymer (PCU), or polymer-sulfur (PCSCU) coating.


XCU slow release fertilizer supplier

XCU Controlled Release Fertilizer range 

XCU slow-release fertilizer provides gradual, steady nutritional uptake for up to 10 weeks of plant response.

XCU fertilizer has the highest nitrogen (N) content (43%) and lowest sulfur content (4%) of any polymer-coated sulfur-coated urea (PCSCU) on the market.

With less N lock-off more of the applied N is taken up and utilized by turfgrass or plants in the expected time frame.

 Mini Grade   

For close and coarse mown golf tees and fairways, lawn care, landscaping and sports turf.

Spring/Summer Season

25-4-10 2Mg 65% XCU Mini grade

34-0-0 70% XCU Mini grade

20-0-20 65% XCU Mini grade 

18-5-18 2Fe 50% XCU Mini grade 

14-2-5 2Fe 25% XCU Mini grade 

Autumn/Winter Season

15-0-23 2Mg +2Fe 75% XCU Mini grade

5-10-12 +2Fe 30% XCU Mini grade

  Graded 2-2.5mm    


Spring/Summer Season

38-0-0 100% XCU 

30-0-0 55% XCU 

21-0-0 55% XCU S

25-5-5 55% XCU 

25-5-10 25% XCU 

25-5-10 50% XCU

20-5-10 2 Mg0 50% XCU 

28-3-10 96% XCU

28-3-10 60% XCU

12-6-6 30%XCU 

9-7-7 30% XCU

28-3-5 2% Mg 65% XCU 



Autumn/Winter Season

15-0-22 3 mg0 60% XCU 

3-12-12 50% XCU

3-6-12 50% XCU

18-0-28 2% Mg 70% XCU 




Polyon controlled release fertiliser suppliers UK

POLYON controlled-release fertilisers encapsulate nutrients within a patented polyurethane membrane, feeding the root zone slowly, constantly, for months at a time. 

POLYON fertiliser can be applied in advance of plant demand because cool soil temperatures of early spring slow nitrogen release.

Less nitrogen is released to the soil from which it can be lost. As soils warm, plant growth and nutrient demand increase. Warmer temperatures also increase nitrogen release from POLYON fertiliser to keep pace with plant needs.


4-5 Months longevity

 MINI GRADE 1-2 mm

Spring/Summer Season

25-4-12 2Mg 65% PCU Mini grade

38-0-0 70% PCU Mini grade

24-0-24 70% PCU Mini grade 

18-4-18 2Fe 65% PCU Mini grade 

14-2-10 2Fe 25% PCU Mini grade 

Autumn/Winter Season

18-0-30  75% PCU Mini grade

8-8-10 +2Fe 30% PCU Mini grade

5-0-15 +3Fe 50% PCU Mini grade

Polyon controlled release fertiliser supplier uk


 Tees / fairways grade 2-3mm


Spring/Summer Season

30-8-8 60% PCU N

38-0-0 100% PCU N 

30-0-0 55% PCU N

21-0-0 55% PCU N

25-5-5 55% PCU N

25-5-10 25% PCU N 

25-5-10 50% PCU N 

28-3-10 96% PCU N 

23-4-10 60% PCU N

28-5-5 PCU N 

22-5-5 PCU N 

30-4-13 65 % PCU N 



Autumn/Winter Season

15-0-22 80% PCU 

20-0-29 80%PCU N  







Nutrilong V180 is a controlled release granular fertiliser with a high precision coating for consistent and reliable nitrogen release. The release of nutrient is largely dependent on temperature, which ensures that nutrition is available when the turf needs it most. Nutrilong V180 provides a typical longevity of 5-6 months in temperate climates.




Nutrilong V90 provides a slow release of nutrients to the turf over a period of up to 3 months. A long steady release profile reduces the number of applications required and minimises losses through volatilisation and leaching. Providing cost and environmental benefits as well maintaining good growth and plant health.


Available in a range of bespoke formulations

Popular products:

15-10-16 +2.3%MgO 30%Nutrilong V90

8-8-16 +3.2%MgO 46%Nutrilong V90

20-5-10 +2%MgO 70%Nutrilong V90

23-7-12 +1.7%MgO 67%Nutrilong V90

28-5-8 +1.2%MgO 80%Nutrilong V90

29-4-8 +1.7%MgO 83%Nutrilong V180



Coated potassium slow release fertiliser supplier

COATED K 0-0-46

Coated potassium fertiliser for slow potassium release.


Coated potassium slow release fertiliser supplier


A homogeneous granule providing a gradual release of iron fertiliser for long lasting green-up and turf hardening.





Other Slow Release Fertilisers

There are other methods to control the availability of nutrients other than coating. Nitrogen availability can be controlled with a nitrogen source consisting of larger molecules (typically methylene urea or urea formaldehyde) that have limited solubility and require microbial action to release the nitrogen. Or by 'stabilised nitrogen' which include inhibitors that slow down the biological conversion of urea to ammonia.



Nutralene slow release fertiliser supplier


MU-PRO slow-release fertiliser is a methylene urea (MU) source with a guaranteed analysis of 40-0-0. The consistent, long-lasting release of nutrition for up to 16 weeks provides a cost-effective, low-maintenance solution to effectively increase root growth, which helps to improve turfgrass health.


(TE = Trace Elements)

Spring/Summer Season

17-0-17-15%S  +TE 50% Methylene Urea

21-3-16 +TE 90% Methylene Urea

14-28-10 +TE 50% Methylene Urea Seed Starter

12-0-9 +2Fe +TE 25% Methylene Urea

24-0-0 +5% Fe 50% Methylene Urea

22-0-22 +1Fe 65% Methylene Urea

25-5-15 +1Fe 50% Methylene Urea

16-0-15 1Fe 0.5Mn 50% Methylene Urea

15-5-15 +2% Mg 25% Methylene Urea

8-0-0 +4% Fe +2% Mg 25% Methylene Urea


Autumn/Winter Season

9-5-27 +2Fe +TE 90% Methylene Urea

14-0-28 +1Fe +TE 90% Methylene Urea

5-0-10 +6% Fe +2% Mg 25% Methylene Urea

15-0-29 +1Fe +TE 70% Methylene Urea

10-5-25 +8.5% S 50% Methylene Urea

15-0-22 50% Methylene Urea

7-0-14 50% Methylene Urea





Nitroform slow release urea formaldehyde fertilizer supplier


NITROFORM® slow-release urea-formaldehyde (UF) fertiliser delivers a steady, balanced and dependable source of nitrogen (N) for up to 22 weeks or more.

ts exclusive release properties make it one of the safest and longest-lasting slow-release sources of N available.



Controlled Release Nitroform/Nutralene – 


Spring/Summer Season

26-4-12 30% Methylene Urea 30% Nitroform

22-3-15 30% Methylene Urea 30% Nitroform

30-8-8 30% Methylene Urea 30% Nitroform





NMAXX stabilised nitrogen slow release fertiliser supplier


NMAXX is a stabilised nitrogen fertiliser that contains urease inhibitors to that help prevent the naturally occuring urease from breaking down nitrogen, and nitrification inhibitors that slow the conversion of ammonium to nitrate.

As a result nitrogen remains in the positively charged ammonium form longer, bonding with the soil, and readily available for plant uptake.

NMAXX provides protection against all three forms of nitrogen (N) loss - leaching, denitrification and volatilisation.

NMAXX is available in a range of standard formulations, as a straight granule, or can be added to bespoke products.



NMAXX 46-0-0 Straight

Spring/Summer Season

25-5-12 2 Mg 50% NMAXX

20-0-20 2Mg 50% NMAXX

14-2-7 2Fe 30% NMAXX

14-0-14 2Mg 50% NMAXX

Autumn/Winter Season

15-5-20 3Mg 50% NMAXX

10-5-20 2Fe 2 Mg 50% NMAXX

12-0-24 3Fe 2Mg 60% NMAXX


GreenBest bespoke custom own brand fertiliser supplier

Call: 01963 364 788