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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

ProloNg 18-6-18+TE is a quality NPK fertiliser which will slowly release over a 4-6 month period. Allowing the plant to draw on available nitrogen over a longer period of time is far more efficient & reduces the amount of nitrogen lost to the atmosphere. The slow release nature of ProloNg 18-6-18+TE also reduces the sudden surge of top growth usually associated with high nitrogen products; instead of rapid growth the effects of this fertiliser will be manageable and still leave your lawn looking healthy and lush. 

ProloNg 18-6-18 contains three vital macronutrients- nitrogen, phosphate and potassium. Each of these macronutrients have their own benefits; nitrogen aids with photosynthesis, phosphate helps plants convert other nutrients into usable building blocks with which to grow and potassium regulates CO2 uptake during photosynthesis. 

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

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% potassium. 

- 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

Key Benefits: 

- Improved utilization and plant take up of applied nitrogen

- Reduction in wasted nitrogen resulting in improved cost efficiency and reduced environmental impact. 

- Season long performance.  

- Reduces unwanted growth flushes. 

- Reduces soft lush growth and disease susceptibility. 

- Reduced chance of scorching. 


Our Recommendation: 

- Always read the product label before use. 

- Apply ProloNg 18-6-18+TE  at 3–6 month intervals.

- 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
Active Ingredient 18% nitrogen, 6% phosphate, 18% potassium
LERAP Category Does Not Apply
Pack Size 20kg
Pack Size Coverage 400m2
Fertiliser Spreading Rate 50g per m2
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
MPN Does not apply

Application Rates

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