Recently added item(s) ×

You have no items in your shopping cart.

Nutrigrow 18-3.5-8+1Mg Phased Release Fertiliser 25kg

More Views

Nutrigrow 18-3.5-8+1Mg Phased Release Fertiliser 25kg
£45.98 Inc VAT £38.32 EX VAT
  • Buy 5 for £37.22 (£44.66 incl. tax) each and save 3%
  • Buy 10 for £36.22 (£43.46 incl. tax) each and save 6%
  • Buy 20 for £35.22 (£42.26 incl. tax) each and save 9%
  • Buy 40 for £34.22 (£41.06 incl. tax) each and save 11%

Availability: In stock

Premium 3-Month Release Fertiliser For Lawns & Sports Surfaces

Delivery Costs Calculated At Checkout
Click & Collect available

Product Calculator - Find out how much you'll need

Key Information

Additional Information

Brand Nutrigrow
Active Ingredient 18% nitrogen, 3.5% phosphate, 8% potassium + 1% magnesium
LERAP Category Does Not Apply
Pack Size 25kg
Pack Size Coverage 500m2
Granule Size 1.0-2.5mm
Spreading Rate 50g/m2
Application Method(s) Spread by Hand, Spreader
Area of Use Amenity Turf, Lawn, Paddock, Pasture, Sports Turf, Trees & Ornamentals
Safe For Use On Conifer Safe, Grass, Lawns, New Grass, Paddocks, Pasture, Safe Around Fruit Trees, Sports Turf
Period Of Use March, April, May, June, July, August, September, October, Spring, Summer, Autumn
MSDS Download


Nutrigrow Phased Release 18- 3.5- 8 + 1Mg is an organic based, high quality NPK fertiliser which is ideal for treating amenity areas such as lawns & sports pitches. This product is ideal for areas which require the feed to be slowly released over a 12-16 week period. Slow/phased release fertilisers help avoid any sudden, rapid growth and also reduce the risk of scorch to the grass. As well as the 3 main macronutrients (nitrogen, phosphate and potassium), Phased Release also contains some trace elements, such as magnesium, which are particularly useful in aiding maximum nutrient uptake. This is a mini-granular compound fertiliser which offers an excellent spreading pattern.

The application rate will depend on how many times you intend to apply the product and how much top growth you require. If you require a detailed recommendation, please take a look at our Lawn Soil Analysis Kit. Apply either by hand or through one of our spreader applicators.

If you require a slow release fertiliser with a higher amount of nitrogen, consider Prolong 46-0-0.

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 18:3.5:8 contains: 18% nitrogen, 3.5% phosphate, 8% potassium.

- So in a 25kg bag: 18% of the 25kg is Nitrogen i.e. 4.5kg N, 3.5% of the 25kg is Phosphate i.e. 0.9kg P, 8% of the 25kg is Potassium i.e. 2kg K + trace elements.

- For more information on Fertiliser rates visit

Key Benefits:

- Suitable for use on lawns, paddocks, pasture, sports turf and trees and ornamentals.

- Active ingredients released over a 12-16 week period.

- Avoids rapid growth and scorching.

- Mini-granular compound formulation provides excellent spreading pattern.

Our Recommendation:

- Always read the product label before use.

- If 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.

- After a granular fertiliser with more trace elements? Take a look at Nutrigrow Spring Rise Fertiliser.

Product Calculator
Product Calculator

How much Nutrigrow 18-3.5-8+1Mg Phased Release Fertiliser 25kg will you need?

Purchase the correct amount of product for your requirements with our material calculator - which will tell you how much product you require.

You will need: Containers

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

Product Videos

    How to Fertilise a Lawn or Paddock

    How Does Fertiliser Work?