One of the simplest ways to compare products that perform in the same way but are sold at different prices in different weights, is to look at the cost per m2. This is where the difference leaps out.
Four-in-one Treatments – A Quick Example
One of our most popular products, Nutrigrow Feed, Weed and Moss Killer is sold in a 20kg bag, covering 625 m2 and working out at just £0.049 per m2. That’s great value for a high performing best-seller.
The product earns its high value badge by tackling the most common lawn frustrations simultaneously:
- Greening: A nitrogen-rich boost that turns a tired, yellowing lawn into a lush, deep green carpet in just a few days.
- Weed Control: Selective herbicides target broad-leaved weeds like dandelions and clover without harming the grass.
- Moss Eradication: High iron content dehydrates moss, turning it black so it can be easily raked away.
- Root Strengthening: Beyond just looks, it feeds the roots to ensure the lawn is resilient against foot traffic and drought.
By thickening the grass sward, it naturally crowds out future weed seeds and moss spores, meaning fewer rescue treatments later in the season. It’s a proactive investment that transforms a high-maintenance chore into a simple, seasonal routine, giving you a professional-looking lawn without the high price tag.
Understanding coverage rates might force you to get the tape measure out – but once you know the area, you can buy and apply more efficiently and make product comparisons more effectively.
So, rather than spreading what you’ve bought until the bag is empty, you’ll know exactly how much product to put into each square metre – giving your grass the optimal dose to stay healthy without under or over applying.
This guide was written in collaboration with Ollie Wright.
Ollie Wright MBPR, FQA
Ollie Wright serves as the Technical Manager at Agrigem, where he oversees the integrity and accuracy of the company’s technical output. A recognised figure within the UK turf-growing sector, Ollie leads Agrigem’s technical response, ensuring that all guidance provided to retail and trade clients remains rigorous, compliant, and at the forefront of industry standards.
With a career built on a foundation of practical experience in farming and landscaping - including the successful management of his own firm - Ollie bridges the gap between theoretical science and field application. His extensive hands-on background is reinforced by industry credentials, including RHS Horticulture, amenity turf and hard surface BASIS, and FACTS qualifications. This unique combination of expertise allows him to deliver high-level strategic advice across diverse sectors regarding plant protection products and complex legislative requirements.
Article Notes:
- Nutrigrow Feed, Weed and Moss Killer is a trademark of Agrigem Ltd. It contains: 10% nitrogen, 2% phosphate, 2% potassium, 8% iron sulphate, dicamba mecoprop-p.
- Use plant protection products safely. Always read the label and product information before use. For label and safety information, refer to the manufacturer’s website.
- Only certified users may apply professional plant protection products. Find out more about safe use of pesticides here.

