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  5. 10 Best Weed Killers in the UK 2023 | RoundUp, Weedol and More
  • 10 Best Weed Killers in the UK 2023 | RoundUp, Weedol and More 1
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10 Best Weed Killers in the UK 2023 | RoundUp, Weedol and More

If you have a garden, you'll know all about weeds - they seem to pop up everywhere, including lawns, patios, and driveways. As with most chemical-based goods, there are a lot of things you should know before you buy a weed killer and unfortunately, there's no one-size-fits-all product! In this article, we'll explain all about the various types.

Then, check out our list of the top 10 weed killers to buy online, including those from leading brands. We've assessed every product on the UK market to bring you the best selection - from eco-friendly sprays to glyphosate-free liquids that are safe to use around pets or children. Getting rid of weeds has never been easier!

Last updated 27/01/2023
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Products or services listed have been independently ranked by the mybest Editorial Team based on the points mentioned in our thoroughly researched buying guide as of 16-01-2023.

How to Choose a Weed Killer in the UK

When shopping for a weed killer, there are quite a few things to think about, such as whether you need a pre-emergent or post-emergent, and what type of weeds they are. You might also need to consider children and pet-safe products. 

① Are You Trying to Kill Weeds or Prevent Their Emergence?

Are You Trying to Kill Weeds or Prevent Their Emergence?

Let's start with the most straightforward question: are you looking to kill off weeds that already exist in your garden, or is your spot currently weed-free and you intend to keep it that way?

Pre-Emergent: Prevent Weeds From Appearing

If your garden is currently free from pesky weeds, you'll want to choose a pre-emergent formula. This type of product is the easiest way to keep your garden permanently weed-free. It works by killing the seeds before they start to germinate. As they say, defence is the best offence! 

A pre-emergent product is usually applied in the winter, to make sure that it catches all of the seeds before they germinate. If you attempt to apply it after weeds have appeared, the product will do nothing to stop them from growing further. 

Post-Emergent: Removes Existing Weeds

If you've not been quick enough and weeds are already poking through your beautiful flowerbeds, you can use a post-emergent to clear them away. This works by killing the plant after it's grown above ground.

The best time to use this type of product is as soon as you see weeds popping up, which is usually during the spring and summer months. Make sure you apply the formula on a warm, rain-free day, so it has plenty of time to dry.

You can also keep the pesky weeds at bay with garden hand tools if you want to avoid chemicals.

② Consider the Location of the Weeds

Consider the Location of the Weeds

Knowing the location of your weeds is another important aspect that will help you to choose the right product. As weeds can grow just about anywhere, you don't want to ruin your meticulously maintained lawn by using a product that kills everything!

Selective Formula: Rids Weeds Growing Amongst Plants

A selective weed killer is the ideal solution if you're trying to get rid of weeds that are living amongst your other plants - in your flower beds, vegetable patches, raised beds, or lawn. 

These herbicides are only toxic to specific categories of plants or weeds so once you've identified which ones are ruining your garden, you can find a product that will eliminate them. As long as you use a formula that's suitable, the rest of your garden should stay intact!

Non-Selective Product: Clears an Entire Area

If you aren't blessed with beautiful flowers in your garden and there's nothing that you need to preserve, opt for a non-selective weed killer. This type of product makes light work of completely clearing the area of all weeds. 

But bear in mind that this type of product is not picky - it's by far the most potent formula, annihilating any living thing in its path. Make sure you double check that there's nothing nearby that you want to keep before you start spraying it everywhere!

Specialised Weed Killer: Treats Specific Areas

When it comes to those annoying weeds that force their way up through the cracks outside your home, you'll want to use a product that's designed especially for patios and driveways.

Unlike the weeds growing in your flowerbeds or on your lawn, the weeds which you find in these areas aren't as deeply rooted, so they can be treated with a milder solution. That said, make sure you read the label carefully as some formulas can bleach the colour of patio tiles!

Garden forks help to root out mature weeds with deeper roots.

③ Perennial or Annual - Which Type of Weeds Are You Dealing With?

Perennial or Annual - Which Type of Weeds Are You Dealing With?

If you've got a bit of a green thumb, you're probably aware that plants fall into two categories: perennials and annuals. Weeds are no different! Determining which type you're dealing with is therefore essential when shopping for a weed killer.

Perennial Weeds: Use a Systemic Weed Killer

Perennial weeds like dandelions and brambles flower reliably every year - this means that they're likely to keep reappearing if you don't deal with them swiftly. Although their stems will die off, giving you false hope that they're dead, the root will remain intact. They basically hibernate until they're ready to grow again the following year!

To treat these weeds properly, make sure that you choose a systemic weed killer. This kind of product is designed to eliminate perennial plants by working its way right down to the root, killing off the plant at its source.

Annual Weeds: Use a Contact Weed Killer

Annual weeds like hairy bittercress, groundsel, and chickweed have a lifecycle of just one growing season - they bloom in the spring, last throughout the summer, and then die off in autumn and winter. For this reason, they're much easier to treat than perennial ones. 

A contact weed killer doesn't kill the plant from the root, instead, it treats it from the soil upwards. Whilst this type of formula will work on both perennial and annual weeds, it's better for using on annual weeds because they won't spring up again, unlike perennial weeds.

Perhaps you're having a garden party at the weekend and need to clean up your flowerbeds pronto! A contact formula is therefore also the best option for quick results, as it's fast-acting enough to get your garden looking tidy in under a week

④ Make Sure It's Safe for Your Kids and Pets

Make Sure It's Safe for Your Kids and Pets

If you're treating an area that children or animals might come into contact with, make sure you use a product which states that it is safe for kids and pets. This is because weed killers are notoriously jam-packed with harmful chemicals.

Unfortunately, child-friendly products tend to be a little weaker and might need applying a couple of times in order to achieve the desired results, but we'd say it's worth the extra effort to keep your loved ones safe!

10 Best Weed Killers in the UK

Now that you know all about the various types of weed killers, let's dive into our list of recommendations! Here are our top picks for weed-busting products that will make your garden beautiful again.
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Fast Action Total Weedkiller

Roundup Fast Action Total Weedkiller  1枚目

The Ultimate All-Round Option for Your Garden



Gallup Home & Garden Weedkiller

Barclay Gallup Home & Garden Weedkiller 1枚目

Delivers Maximum Results Against Stubborn Weeds



SBK Tough Weedkiller

Vitax SBK Tough Weedkiller 1枚目

Beat The Brambles With This Long-Lasting Liquid


Resolva Pro

Xtra Tough

Resolva Pro Xtra Tough 1枚目

Gets Rid of Weeds in 24hrs



Ultra Tough Weedkiller Liquid Concentrate

Weedol Ultra Tough Weedkiller Liquid Concentrate 1枚目

Clear Through Anything With This Cost-Effective Formula



Tough Weedkiller

Roundup Tough Weedkiller 1枚目

Tough on Weeds, Gentle on Soil



Lawn Weedkiller

Weedol Lawn Weedkiller 1枚目

Make Your Lawn Lush Again With This Non-Toxic Spray



Pathclear Liquid Concentrate

Weedol Pathclear Liquid Concentrate 1枚目

Perfect for Efficiently Clearing Pathways



WeedFree Plus

Neudorff WeedFree Plus  1枚目

Eco-Friendly and Fast-Acting



Rootkill Plus

Weedol Rootkill Plus  1枚目

An Easy-To-Apply Formula for Driveways and Patios

Product details

RoundupFast Action Total Weedkiller


The Ultimate All-Round Option for Your Garden

Pro: biodegradable, child and pet-friendly | Con: destroys desirable plants too

Our number 1 spot goes to an incredible product from Roundup, the "Fast Action Total Weedkiller". This formula will cut through almost any weed, making it a great all-round option if you don't want to fork out for multiple products to sort out the different areas around your home.

It's also one of the most straightforward products to use - just apply a 10-minute continuous spray with the pump 'n' go system and you should start to see results in 1-2 days. We also love the fact that this weed killer is biodegradable when it reaches the soil, and it's both child and pet-friendly too!


BarclayGallup Home & Garden Weedkiller


Delivers Maximum Results Against Stubborn Weeds

Pro: large coverage area, complimentary cup and gloves included | Con: high price for value

Tried a few weed-killers before and nothing seems to do the trick? Opt for this miracle product by Barclay for maximum results - it uses the same amount of glyphosate as professional herbicides, making it the strongest domestic weed killer in the UK!

It's brilliant at treating stubborn perennials in one fell swoop, including grass, nettles, and dandelions. Best of all, unlike most super-strong weed killers which leave the ground out of action for many weeks, this product allows you to replant only seven days after application. Amazing!


VitaxSBK Tough Weedkiller


Beat The Brambles With This Long-Lasting Liquid

Pro: value for money, long-lasting | Con: can't replant in a treated area for 6 weeks

SBK from Vitax is one of the most potent weed killers on the market. It's capable of completely killing off woody weeds like brambles, thistles, and even tree stumps. Conveniently, it doesn't kill grass, so there's no need to worry if you accidentally spill some on your freshly mowed lawn.

The results tend to last for months after using this industrial-strength weed killer, so it's fantastic value for money. That said, it's worth noting that you won't be able to replant anything in the treated area for 6 weeks.


Resolva ProXtra Tough


Gets Rid of Weeds in 24hrs

Pro: visible effects in 24hrs | Con: contains potential irritants

This quick-fix weed killer is one of the most popular ones on the market. It's a unique blend, combining the fast-acting properties of a contact weed killer with the long-lasting effects of a systemic formula. So, not only does it kill off those ugly weeds quickly, they won't be coming back anytime soon.

A handy feature of this product is the applicator head, which can cover both small, targeted areas and large areas quickly. At just under £20 for 3 litres, you certainly get your money's worth!


WeedolUltra Tough Weedkiller Liquid Concentrate


Clear Through Anything With This Cost-Effective Formula

Pro: large coverage area | Con: takes a few weeks to have any effect

When it comes to weeds, this is one tough cookie that'll cut through anything! Brambles, thistles, nettles - anything resilient or persistent, basically. Plus, you get 8 tubes for a bargain price, making this a very cost-effective purchase.

Whilst this is an amazing product for clearing large areas, make sure you don't use it around flowerbeds or vegetable patches - otherwise, all of that precious time spent gardening will go to waste!


RoundupTough Weedkiller


Tough on Weeds, Gentle on Soil

Pro: environmentally-friendly, fast-acting | Con: sprays at an awkward angle

Roundup's "Tough Weedkiller" is another excellent choice for getting rid of weeds that you might find poking through the cracks on your patio. As it's a systemic weed killer, it works right down to the root to prevent pesky plants from returning. 

With visible results in under 48 hours, you'll have a clear outdoor space in no time! Plus, it's an eco-friendly formula that's incredibly affordable if you're on a budget.


WeedolLawn Weedkiller


Make Your Lawn Lush Again With This Non-Toxic Spray

Pro: glyphosate-free, lawn-focused | Con: not suitable for new lawns

If your beautiful garden is suffering from a weed infestation, you can't go wrong with Weedol's lawn-focused weed killer! It can be liberally sprayed all over your lawn to kill persistent broad-leaved weeds without damaging the grass. However, it doesn't do much for narrow-leaved weeds or deep-rooted ones.

Since this product contains no glyphosate, it's not toxic or harmful to children and pets, which is always a bonus! Frustratingly though, it cannot be used on a new lawn - only one that's at least two months old.


WeedolPathclear Liquid Concentrate


Perfect for Efficiently Clearing Pathways

Pro: versatile pre- and post-emergent | Con: requires constant mixing with water

As its name suggests, Weedol's "Pathclear" has been specifically designed to treat paths and driveways. In fact, it's one of the best products on the market for doing so! Working as both a pre-emergent and a post-emergent, it'll completely clear the treated area for up to three months.

Since this product is a concentrated formula, it needs to be mixed with water. The downside is that you'll need to mix it very well to get a decent consistency. Unfortunately, applying it with a watering can also significantly reduces accuracy - we therefore recommend only using it on areas with no other plants.


NeudorffWeedFree Plus


Eco-Friendly and Fast-Acting

Pro: fast-acting, glyphosate-free | Con: works selectively

Neudorff produces some of the most environmentally-friendly products on the market for the eco-conscious. Although it's not the strongest formula, it starts working after just an hour, making it an excellent quick-fix for messy gardens!

Being a selective formula, this product will only work on certain weeds such as goutweed, moss, and field horsetail. Make sure you identify which ones are plaguing your garden before purchasing!


WeedolRootkill Plus


An Easy-To-Apply Formula for Driveways and Patios

Pro: easy to apply | Con: kills desirable plants too

Weedol's "Rootkill Plus" formula is easy to apply, thanks to the spray-nozzle bottle, and the systemic formula is ideal for getting rid of tough perennials. Bear in mind that this product is only suitable to use from April to November though.

While this is safe to use around children, it's a non-selective product so it will kill any plants in its way. For this reason, make sure you only use it around patios and driveways, rather than grassy areas or flowerbeds that you want to keep!


When you're shopping for weed killers, you'll want to consider all of the points we raised in our buying guide, from the type of weeds that the product treats to the amount of coverage it can provide. Armed with this knowledge, you'll be able to pick the right product and clean up your outdoor space with ease! 

Author: Roxy Pratley

When you purchase products mentioned in the article, part of the sales may be returned to mybest.
The descriptions of each product is referenced from the content available from the manufacturer, e-commerce sites etc.

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