The beginners guide on fertilising your lawn (Full guide)
Welcome to the Beginner's Guide on Fertilising Your Lawn the Correct Way
Feeding your lawn might seem simple, but doing it the right way can make all the difference between patchy grass and a lush, green carpet you can be proud of.
In this guide, we’re breaking down everything you need to know about lawn fertiliser — from choosing the right one, to measuring your lawn, applying it properly, and avoiding the common mistakes that trip most people up.
We've also included short, easy-to-follow videos to walk you through each step.
Let’s get stuck in and help you get your lawn looking its best!
This full video can be found on the Premier Lawns YouTube channel, but we’ve broken it into bite-sized videos so you can easily find the information you need. Let’s begin.
(This page my load slower than usual due to the high amount of helpful videos on it)
Table of Contents
1. Feeding Your Lawn
A quick intro to what we will be covering in this guide
1.2 Why It’s Important to Get the Right Measurements
2. Measuring Your Lawn
It’s important to know the size of your lawn so you can order the right amount of fertiliser for your lawn.
2.1 Using the iGrow Carpet Measure your lawn tool
iGrow Carpet has its own measuring tool, powered by Google Maps. It works great for most lawns—unless your garden isn’t on Google or it’s hidden under thick trees. If that’s the case, just check out the tips below
How to the iGrow Carpet Lawn Measuring Tool
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1. Type your address into the search bar and press enter.
2. Click “Draw Your Lawn” to begin outlining each lawn area.
3. Click on the map to draw a shape (minimum 3 points).
4. When you're done, click the first point to close the shape.
5. Repeat to draw additional lawn areas if needed.
6. View the total area and required fertiliser amount.
7. Use “Undo Last Point” to remove the last marker, or “Clear” to reset.
2.2 The Most Basic Way – Pacing It Out
Pacing your lawn to measure it is quick, but it’s not the most accurate method.
Everyone’s stride is a bit different, and it’s easy to miscount or go off in a slightly wonky line.
And if the garden is an odd shape, it can be easy to get it wrong. Which means you might buy too much fertiliser… or not enough.
It’s handy for a rough estimate, or if your lawn isn't on Google.
2.2 Using Plant Pots or Marker Posts
This next tip can also work if your lawn isn't on Google and it's an odd shape. Measuring your lawn into smaller areas and then adding them all up can work, although it's a little slow and often involves a lot of math.
3. Applying Fertiliser
Now you know the size of your lawn, it’s time to look at how to apply fertiliser. We’re using different spreaders. Here’s a quick look at some of the most popular types:
We love the Einhell battery power spreader, you will see why later on in the guide. You can of course use one that's not on this list, we just bought these to test out and help you find one that works well
4. Calibrating Your Spreader
Calibrating your spreader means setting it up to apply the right amount of fertiliser – not too much, not too little. If you skip this step, you could end up with patchy results, waste money on a product, or even burn your lawn. What works for one person might not work for the next, depending on walking speed and technique (we cover all of these in the next few videos, plus more)
4.1 Intro to Calibrating Spreader
If it’s too much or too little, just adjust the setting on the spinner and try again. Small tweaks make a big difference, so it’s worth taking a few minutes to get it right!
4.2 Our Cheapest Spreader
4.3 Our Mid-Range Spreader
4.4 Battery-Powered Spreader
4.5 Roundup of Hand Spreaders
4.6 Push Spreader
5. How to Apply the Fertiliser
This is something we see all the time – people being told incorrect methods of applying fertiliser. Here’s the way the pros do it.
5.1 What Most People Get Wrong
5.2 Don't do this
5.3 Applying Fertiliser onto Your Lawn
The bit you’ve been waiting for – actually getting the fertiliser onto the lawn. Now that you know how much to use, here’s how to apply it evenly. Remember the rule, throw it to your footprints (you can thank us later) at half rate.
5.4 Do This After You Fertilise
This doesn’t always need to be done straight away, but the sooner you do it, the quicker you’ll see results.
Final Tip
This one’s simple – but so often forgotten. A small change that can make a big difference.
Frequently Asked Questions
Yes, our products are child and pet-friendly when used as directed.
We recommend keeping kids and pets off the lawn while the treatment is being applied and until it’s fully dry. After that, it’s safe for them to enjoy the garden again!
You can start iGrow Carpet fertiliser at any time of the year.
You can fertilise on the same day as mowing. Just make sure you mow before you feed (not after). If you mow afterwards, you’ll end up hoovering up some of the fertiliser and possibly damaging the fertiliser.
If the lawn’s full of weeds, give it a bit of time to recover so you’re not stressing it out before mowing it.
Leave it for a few days after you have fed it before mowing the lawn if there is a high amount of weeds.
Yes, but avoid soggy or waterlogged ground. Damp is fine, it actually helps the fertiliser absorb as long as you can keep the fertiliser in the spreader dry.
Yes. Watering helps prevent scorch. It will also help it work faster.
Usually 7–10 days. Some products one work faster than others.
Yes, but it’s best to water it in first.
Yes, and it can scorch your lawn. Always follow the instructions and don't guess the amount.
We always recommend that you apply iGrow Carpet granular fertiliser with a fertiliser spreader. Please watch our videos on different types of spreaders
