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

Availability: In stock

High Potash Fertiliser With Trace Elements

  • Buy 5 for £26.00 (£31.20 inc VAT) each and save 6%
  • Buy 10 for £23.00 (£27.60 inc VAT) each and save 17%
  • Buy 20 for £21.00 (£25.20 inc VAT) each and save 24%
£33.00 Inc VAT £27.50 Ex VAT
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Product Description

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 KitApply either by hand or through one of our applicators. 


Recommended Period of Use
Jan Feb
Mar Apr May
Jun Jul Aug Sep Oct Nov Dec


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 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.

Brand Nutrigrow
Active Ingredient 5% nitrogen, 0% phosphate, 29% potassium, 4% iron, 2.5% magnesium
Pack Size 25kg
Pack Size Coverage 500m2-2000m2 (depends on rate)
Fertiliser Spreading Rate 20-50g per m2
Application Method(s) Spread by Hand, Spreader
Area of Use Amenity Turf, Horticulture, Lawn, Paddock, Pasture, Plants, Sports Turf, Trees & Ornamentals
Safe For Use On Conifer Safe, Grass, Lawns, New Grass, Paddocks, Pasture, Safe Around Fruit Trees, Safe Around Shrubs, Safe Around Trees, Sports Turf
Period Of Use Spring, Summer, Autumn

Application Rates

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