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Agrigem Specialist Amenity Products and Services

5-0-29 Nutrigrow High-K Fertiliser 25kg

5-0-29 Nutrigrow High-K Fertiliser 25kg
£46.80 Inc VAT £39.00 Ex VAT
  • Buy 5 for £38.00 (£45.60 incl. tax) each and save 3%
  • Buy 10 for £37.00 (£44.40 incl. tax) each and save 6%
  • Buy 20 for £36.00 (£43.20 incl. tax) each and save 8%
  • Buy 40 for £35.00 (£42.00 incl. tax) each and save 11%

Availability: In stock

Nutrigrow High-K is a high potash fertiliser with trace elements. It is ideal for use both as a general grass feed and also to correct potassium deficiencies. 

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Key Information

Additional Information

Active Ingredient5% nitrogen, 0% phosphate, 29% potassium, 4% iron, 2.5% magnesium
Pack Size25kg
Pack Size Coverage500m2-2000m2 (depends on rate)
Granule Size1-2.5mm (Midi)
Spreading Rate20-50g per m2
Application Method(s)Spread by Hand, Spreader
Area of UseAmenity Turf, Horticulture, Lawn, Paddock, Pasture, Plants, Sports Turf, Trees & Ornamentals
Safe For Use OnConifer Safe, Grass, Lawns, New Grass, Paddocks, Pasture, Safe Around Fruit Trees, Safe Around Shrubs, Safe Around Trees, Sports Turf
Period Of UseSpring, Summer, Autumn


High K is a quality fertiliser which is ideal for areas requiring a large amount of potassium (K). Although this product is mainly used in paddocks & pasture, due to its compound mini-granule formulation it is also suitable for lawns, sports turf & amenity areas.

This product can be used at higher rates for correcting potassium deficiencies, or used as a general feed which will slowly release the fertiliser over a 6 week period. High K contains a high level (29%) of potassium. Potassium is a vital macronutrient for plants, grass and trees; as well as regulating CO2 uptake during photosynthesis, potassium also regulates water, produces ATP and activates growth related enzymes. Alongside potassium, High K also benefits from low levels of nitrogen, magnesium and iron which all also contribute to the health of plants.

The application rate will depend on how many times you intend to apply the product and also what the grass is going to be used for. If you require a detailed reccomendation, please contact us or take a look at our Soil Analysis Kit. Apply either by hand or through one of our applicators.

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 5:0:29:4Fe:2.5Mg contains: 5% nitrogen, 0% phosphate, 28% potassium, 4% iron(Fe), 2.5% magnesium.

- So in a 25kg bag: 5% of the 25kg is nitrogen i.e. 1.25kg N, 0% of the 25kg is phosphate i.e. 0kg P, 29% of the 25kg is potassium i.e. 7kg K, 4% of the 25kg is iron i.e. 1kg Fe, 2.5% of the 25kg is magnesium i.e. 0.75%.

- For more information on Fertiliser rates visit

Key Benefits:

- Suitable for paddocks, pasture, lawns, sports turf and amenity areas.

- Mini-granule compound formulation.

- Corrects potassium deficiencies when used at high rates.

- Also contains magnesium and iron.


Our Recommendation:

- Always read the product label before use.

- If you are looking for a liquid fertiliser look at Nutri-gem Liquid.

- For applying fertiliser over large areas look at our Pro Fertiliser Spreader.

- Improve the pH of your soil by applying Granulated Lime.

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Calculator Disclaimer This is guide only, For crop specific rates please check the product label.

Product Videos

    How Does Fertiliser Work?

    How to Fertilise a Lawn or Paddock