An essential garden tool for neat, manicured lawns
Add a finishing touch to your lawn by trimming the edges with a grass trimmer.
Lightweight and easy to manoeuvre, grass trimmers are great for accessing areas that your lawnmower can’t reach and for tidying up overgrown grass in fragile areas of the garden such as around plants, trees or the borders of your lawn.
There are a number of types and models available and choosing one can be difficult. So let's breakdown the options for buying a new or replacement grass trimmer.
Before you begin
What will you be cutting?
When deciding on the right grass trimmer for you, it's important to think about what type of grass you'll be cutting most often. Will it be a standard garden lawn, or coarser, more overgrown vegetation? Knowing this will determine how powerful you need your grass trimmer to be, as well as the type of cutting system you choose.
How big is your garden?
If you have a large garden, or plan to trim far away from your house, consider an option that doesn’t have to be plugged into the mains for greater freedom of use and movement. Similarly, a lightweight option will help you stay comfortable for the duration of the task.
Also, consider how densely packed with plants your outdoor space is. For example, if you need to work around a lot of flowers, bushes or trees, a trimmer with a smaller head will allow you to do this without damaging them as easily.
Grass trimmer types
There are three main varieties of grass trimmer: corded electric, battery-powered (also known as cordless electric) and petrol.
Corded electric grass trimmers
Electric grass trimmers provide unlimited constant power so you don’t need to worry about how much fuel you have or whether you have enough charge in the battery. Lightweight and easy to handle while still being powerful, corded grass trimmers don’t require much maintenance and are ideal for use close to the house (or wherever your power source is).
Being plugged into a mains electricity socket, you have to be aware of the trailing cord at all times for safety. Make sure that your outdoor power source, as well as any extension cables, have a residual current device (RCD) – these shut off power when there’s a fault or the cable is damaged, ensuring that you don’t get a shock.
Our electric grass trimmers:
- Have cutting widths of between 220 and 350millimetres (mm)
- Have a power output of up to 600 watts (W)
- Come with a cable up to 10 metres (m) long
- Can weigh up to 4.6kilograms (kg)
- Offer a range of handle types, including soft-grip, ergonomic, loop, pommel or telescopic
Battery-powered grass trimmers
If you don’t have easy access to a power source, want to minimise the risk of damaging a cable or would simply prefer the freedom to easily move around, then our battery-powered trimmers are for you. Lightweight, low maintenance and quiet, cordless trimmers can be used in gardens with thicker grass.
Our battery-powered grass trimmers:
- Have cutting widths of between 220 and 300mm
- Have a power output of between 10.8 and 36V and an Amp rating of up to 2.5Ampere hours (Ah)
- Come with a Ni-Cd or Lithium-ion battery. Lithium-ion batteries don't lose power when not in use.
- Are available with innovative Syneon Chip technology. This efficiently manages battery life by providing just the right amount of energy required for the task at hand.
- Weigh between 1.9 and 4kg
- Come with a soft-grip handle
Petrol grass trimmers
For those with long grass, coarse weeds or rough vegetation, a petrol grass trimmer is perfect. They're powerful, portable and offer unrestricted movement.
Ours have a 2-stroke engine, which means they require fuel and oil to be mixed together before they can be used. Heavier and louder than other models, petrol trimmers need regular maintenance to keep them performing at their best.
Our petrol grass trimmers:
- Have a cutting width of 430mm
- Have either a 0.8 or a 0.65kilowatt (kW) output
- Feature either a 25.4 or 26 cubic capacity (cc) engine
- Weigh between 5 and 9.4kg
- Come with an ergonomic loop handle or a “D” handle
There are two types of cutting systems for grass trimmers: lines and blades.
Line cutting systems
The more traditional system – a strong wire rotates extremely quickly to cut the grass and is held on a spool within the head of the grass trimmer. This wire (or line) can become degraded with use, and so a fresh supply is needed to keep trimming with ease. There are three different ways to release this extra line from the trimmer,
This process involves stopping the grass trimmer and manually pulling out more line.
This method requires the trimmer head to be physically ‘bumped’ on the ground to release more line.
This mechanism gives out more line when the grass trimmer trigger is released.
Blade cutting systems
Alternatively, opt for a grass trimmer with a plastic blade cutting system. These blades rotate at high speed, are easy to change, and are less hands-on than line cutting systems – they also tend to be more durable.
Look out for grass trimmers with a Durablade cutting system (pictured). This blade is made from a nylon composite and automatically contracts when it hits a hard object. Because of this it can last longer than other blades and ensures fewer interruptions during use.
When choosing your grass trimmer, look out for these features and technical specifications.
Measured in millimetres (mm)
The size of your trimming area determines the size you need - the bigger the cutting width, the more grass the trimmer can effectively clear in one go. Larger cutting widths will make cutting large areas quicker, but are not the best choice for smaller, hard-to-reach areas.
As a general rule:
- 200 to 300mm is a good width for light grass trimming and small-to-medium lawns
- 301 to 399mm is a better width for thicker grass and medium-to-large lawns
- 400mm and above is perfect for heavier work, like thick grass, undergrowth and large gardens
Measured in watts (W) or volts (V)
When it comes to electric motors, the bigger the power output is, the more powerful the trimmer motor will be – allowing them to deal with thicker grass. Electric motor power is measured in watts, while cordless battery power is measured in volts.
Generally speaking, if you’re looking to use a trimmer on a small lawn, or for light use, electric models from 250 to 400W or cordless models with 14V and above will be suitable. For larger lawns with difficult areas, more force will be required.
Measured in ampere hours (Ah) or amp rating
The batteries of cordless products are measured in Amperes (Ah), this dictates the runtime that the battery will give you. The higher the capacity, the longer the battery will run for. The majority of our grass trimmer batteries are lithium-ion, which ensure no self-discharge when in storage and are therefore always ready for use.
Look out for grass trimmers that are supplied with batteries which can be used with other power tools, including drills, jigsaws, lawnmowers and hedge trimmers.
Measured in cubic centimetres (cc)
The bigger the number of cubic centimetres, the more powerful your petrol grass trimmer will be. More power is deployed to the cutting head, enabling it to deal with tougher jobs like thicker grass or weeds. Usually, the larger the engine, the heavier the tool is, so bear that in mind when choosing your grass trimmer.
Measured in litres (L)
The larger the tank, the more petrol your grass trimmer can store. This means that you can trim for longer without having to fill up – although a bigger cubic capacity means that it will need more petrol to power it and this affects how quickly the fuel is used.
Measured in metres (m)
If you've opted for a corded electric grass trimmer, you'll have to keep an eye on the cable when trimming. For greater reach and mobility, opt for ones with the longest cable length available. Ours span up to 10m in length.
Measured in kilograms (kg)
Grass trimmers require lifting and, depending on the job, this could take quite some time, so be sure to choose a weight that you can comfortably manage for the duration. Some grass trimmers come with ergonomic handles and a well-balanced design to ensure that you’re as comfortable as possible when you’re using it.
There are a number of handle types available to help you stay comfortable when trimming. These include different shapes, such as loop, "D" and pommel, and features like soft-grip, ergonomic design and adjustable length. This extendable quality found on telescopic handles allows you to adjust the height of the grass trimmer to your height, making sure that it’s in a position that is comfortable for you. And for comfortable handling in any position, consider a grass trimmer with a second handle for extra stability.
Most of the time, grass trimmers will be used to cut lawn borders that are near to established plants – plant protectors ensure that they’re not damaged while you are working. Choose a grass trimmer with a plant protector if you have a garden with lots of planted borders and shrubbery.
90 degree rotating cutter head
Some trimmers come with a one-click rotating head, so you can effortlessly switch between trimming and edging functions - a great time-saving feature for busy gardeners.
You might need
Stock up on those extra bits and pieces that complement your grass trimmer.
It's important to wear safety goggles, gloves and sturdy shoes when operating a grass trimmer. These protect you from anything, such as small obstacles like sticks and stones, that could be thrown out by the grass trimmer when trimming.
Corded grass trimmer accessories
If you’re looking for more manoeuvrability with your corded grass trimmer, pick up an outdoor extension cable so that you can trim further into the garden. Always make sure your power outlet has RCD protection, as this will cut off the electricity in case you run over the cable or there’s a fault.
Battery grass trimmer accessories
If you want to work without unwanted breaks while your battery recharges, pick up an extra battery so that you can have one charged and ready to go. Interruptions avoided.
Petrol grass trimmer accessories
There are a few essential accessories for your petrol grass trimmer. These include engine oil to keep the tool delivering optimum performance, a petrol can to safely store your petrol and a funnel to easily and neatly pour the petrol into your engine.
Spares and replacements
After a while, all tools need a little upkeep and maintenance. We offer an extensive range of replacement spools, lines and blades to help keep your grass trimmer in tip-top shape.