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ProloNg 18-6-18+TE Slow Release 20kg

Availability: In stock

6 Month Release Fertiliser

  • Buy 5 for £39.00 (£46.80 inc VAT) each and save 8%
  • Buy 10 for £37.00 (£44.40 inc VAT) each and save 12%
  • Buy 20 for £35.00 (£42.00 inc VAT) each and save 17%
£50.40 Inc VAT £42.00 Ex VAT
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Product Description


LERAP Category  N/A

Active Ingredient  18% Nitrogen, 6% Phosphate & 18% Potassium

Spreading Rate 50g per m2

Area Covered 400m2

Pack Size  20kg

Required Safety Equipment - Gloves


Prolong 18-6-18+TE is a fertiliser which will release over a 4-6 month period. Allowing the plant to draw on available nitrogen over several month period is far more efficent & reduces the amount of nitrogen lost to the atmosphere. By releasing slowly over a long period it reduces the sudden surge of top growth usually associated with high nitrogen products.

If you require a product which doesnt release for quite as long, consider 18-3-8 Slow Release


Recommended Period of Use
Jan Feb
Mar Apr May
Jun Jul Aug Sep Oct Nov Dec
    leaf leaf leaf leaf leaf leaf leaf leaf    
leaf = Optimum time for application

Benefits of ProloNg™ include:

- Improved utilization and plant take up of applied Nitrogen
- Reduction in wasted Nitrogen resulting in improved cost efficiency and reduced environmental impact by:
            - Preventing volatilization
            - Slowing down nitrification
            - Preventing leaching
- Season long performance – recommend applying at 3 – 6 month intervals
- Comprehensive range formulations blended for use throughout the growing season
- Reduces unwanted growth flushes
- Reduces soft lush growth and disease susceptibility
- Protects water courses from nitrate pollution (less algae growth in ponds/lakes)
- Safe, reduced scorch susceptibility formulations
- Low salt formulations to improve root zone environment
- All formulations can be applied at any time of year when conditions allow
- New range of BioActive formulations adding life to your root zone
- Trace elements contained in some formulations (see list)
- Bespoke formulations available on request


*Please note, free delivery is only offered on fertiliser orders over £300 (ex VAT)*


Understanding Fertiliser Analysis

Under the metric system the unit of measurement is a kg

Recommendations are given in kg/ha

A fertiliser with the analysis 18:6:18 contains:-

18% Nitrogen 6% Phosphate 18% Potash

So in a 20kg bag:-

18% of the 25kg is Nitrogen i.e. 9.2kg N

6% of the 25kg is Phosphate i.e. 0kg P

18% of the 25kg is Potassium i.e. 0kg K

For more information on Fertiliser rates visit


 Our Recommendation

- If you require a liquid alternative consider Slow N

- Look at our Heavy Duty Spreader or Pro Fertiliser Spreader

- Improve the pH of your soil by applying Granulated Lime

Brand ProloNg
LERAP Category Does Not Apply
Pack Size 25kg
Application Method(s) Spread by Hand, Spreader
Area of Use Amenity Turf, Lawn, Sports Turf, Trees & Ornamentals
Safe For Use On Conifer Safe, Grass, Lawns, New Grass, Safe Around Fruit Trees, Safe Around Shrubs, Safe Around Trees, Sports Turf
Period Of Use March, April, May, June, July, August, September, October, November, Spring, Summer

Application Rates

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