The Best Weed Killer 2021

Tackling a growing weed problem in your garden requires a strong weed killer that’s also able to kill the root. Within this article, we list some of the best solutions that are suitable for all types of weeds as well as formulas safe for use upon lawns.

Tweet Pin It
Best Weed Killer UK
Darimo is reader-supported and we may earn an affiliate commission if you buy through links on our site. Find out more.

If you are looking for a quick answer, the best weed killer that’s ready to use out of the bottle is the Roundup Fast Action. It comes with a “power pump” mechanism and wand that makes killing all types of weeds much easier. If you require a strong weed killer for deep rooted weeds, the Barclay Gallup is the best alternative that’s high in glyphosate.

Weed Killer Comparison

Weed KillerStrengthApplication
Roundup Fast ActionStrongPump & Wand
Weedol Fast ActingStrongSpray Trigger
Barclay GallupSuper Strong (High Glyphosate)Pressure Sprayer
Weedol Easy MixMild (Perfect for Lawns)Sprayer or Watering Can
Resolva 24HStrongPump & Wand
Rootblast SolutionSuper Strong (High Glyphosate)Pressure Sprayer

It’s important to note that if you are attempting to kill weeds upon your lawn, you should use a dedicated lawn weed killer. This is due to the fact that many weed killers contain glyphosate, which if sprayed on your lawn will also kill your grass.

Below is a list of the best weed killers that are easy to use and highly effective at removing all types of weeds.

The Best Weed Killer


1. Roundup Fast Action Weed Killer

Roundup Fast Action Weed Killer
By far the most popular and highly rated weed killer in the UK is the Roundup Fast Action. This particular example is a Pump ‘N Go option but the brand offer the formula as a refill bottle, trigger spray bottle and a pull-out trigger spray bottle.

According to the brand, it’s designed to kill weeds and their roots with visible results in just 1 to 2 days. This can be achieved with a single application and upon a range of areas such as paths, drives, patios, fences and much more.

Other features of the Roundup Fast Action include:

  • Ready to use solution
  • Extending wand design
  • Provides up to 10 minutes of continuous spray
  • Child and pet friendly once dried
  • Leaves no harmful residue
  • Contains 7.2g/l of glyphosate
  • Large 5 litre bottle with refills available

Although expensive, the Roundup Fast Action in this clever Pump ‘N Go bottle is one of the best ready to use weed killers on the market. The popularity speaks for itself and it certainly won’t disappoint wherever its used.
Check it Out

2. Weedol Fast Acting Weedkiller

Weedol Fast Acting Weedkiller
Another popular ready to use weed killer is by the Weedol brand and their formula promises visible results in just 1 hour. In terms of completely killing the weeds, it takes 24 hours and you can then begin to replant or reseed.

To apply this weed killer, it comes with a spray trigger connector on the bottle, which allows you to precisely target weeds.

Other features of the Weedol Fast Acting include:

  • Visible results in 1 hour
  • Kills off weeds in 24 hours
  • Intuitive spray trigger gun application
  • Suitable for beds, borders, flower pots and other areas
  • Contains acetic acid
  • 3 litre bottle

If you require a strong weed killer that’s easy to use and provides fast results, you can’t go wrong with this Weedol solution. The day after treatment of the area, you can even begin to replant or reseed, which no other formula can match.
Check it Out

3. Barclay Gallup Glyphosate Weed Killer

Barclay Gallup Glyphosate Weed Killer
If need to tackle tough weeds with a super strong weed killer, the Gallup formula is the best option. It contains a high concentrate of glyphosate and when mixed as per the instructions, it can treat up to 3332m2.

In terms of using this weed killer, you will require a pressure sprayer and have to mix the solution yourself. According to the brand, per 1 litre of water, you should use 24 ml of the formula but you can increase the amount for extra strength.

Other features of the Gallup Glyphosate Weed Killer include:

  • Supplied with gloves and a measuring cup
  • 2 litre bottles provides treats up to 3332m2
  • Commercial strength formula
  • Kills deep rooted weeds in a single application
  • Leaves no lasting residues or odours

Overall, the Gallup Weed Killer is a professional grade formula that’s highly effective and also offers outstanding value for the money. The only drawback is that you have to mix it yourself but it’s really easy to do.
Check it Out

4. Weedol Concentrated Lawn Weed Killer

Weedol Concentrated Lawn Weed Killer
Another option by Weedol is their weed killer for lawns, which is ideal for killing dandelions, daises and clovers. According to the brand, it contains no glyphosate and is designed to kill weeds and not your lawn.

In terms of using this lawn weed killer, you will want to pour the concentrated formula into a sprayer or watering can. You can then treat any weeds upon your lawn without the worry of it killing off the grass.

Other features of the Weedol Lawn Weed Killer include:

  • Supplied with mixing instructions
  • Treats up to 333m2
  • 500 ml concentrate formula
  • Breaks down in soil
  • Results within 2 to 4 days
  • Child and pet friendly once dried
  • Only requires a single application

The Weedol Lawn Weed Killer is a high quality and easy to use formula and by far the best option for lawns. For the best results using this weed killer, it’s recommended to use it between April and September.
Check it Out

5. Resolva 24H Ready To Use Weed Killer

Resolva 24H Ready To Use Weed Killer
Resolva are another popular manufacturer of weed killers in the UK and their 24H formula is a great option. It features a power pump mechanism and wand for application and is designed to provide results in just 24 hours.

In terms of using this weed killer, it’s best used upon paths, patios or driveways and it’s able to kill off even the toughest of weeds that other ready to use solutions may have struggled with.

Other features of the Resolva 24H Formula include:

  • Power pump and wand application
  • 5 litre bottles provides up to 5 minutes of spraying
  • Visible effects within 5 minutes
  • Best used from April to November
  • Available in a 1 or 3 litre bottle

Overall, the Resolva 24H is an excellent all-round weed killer that’s effective and easy to use. It isn’t the cheapest but the power pump mechanism is worth paying the extra for and you can use cheaper refills to continue to use it.
Check it Out

6. Rootblast Glyphosate Weed Killer

Rootblast Glyphosate Weed Killer
Another super strong weed killer that’s ideal for deep rooted garden weeds is the Rootblast formula. As with the Gallup alternative, it’s a concentrated formula that contains a large amount of glyphosate for super effective results.

According to the brand, when mixed correctly, you can expect a coverage of approximately 1666m2 from just 1 litre.

Other features of the Rootblast Glyphosate Weed Killer include:

  • Commercial strength
  • Contains 360 g/l of glyphosate
  • Suitable for all types of weeds
  • Supplied with gloves
  • Made in the UK

Overall, the Rootblast formula is another strong weed killer that’s high in glyphosate and provides plenty of coverage. However, the premium price tag when compared to the Gallup alternative makes it a less desirable option. However, it still provides plenty of coverage and is ideal for those with small areas to treat.
Check it Out

Conclusion

Weeds can be a real problem in gardens, patios and various other areas around your home and they also come in a variety of different types. However, controlling them with any of our recommendations above is relatively straightforward. For the best results, you will want to use the formulas as they are growing, which is usually from mid-spring time. If you don’t want to use any chemicals to kill off weeds, you may want to check out the various electric weed killers. These tools use fire to instantly burn the weeds in a matter of seconds and without the use of any chemicals.

The Author Who Worked On This Article

author dan darimo

Dan Morgan

As a keen DIY’er, gardener and somebody that loves the latest tech, Dan is someone that brings years of experience in multiple trades. Since buying his first house, he has been obsessed with renovating properties and filling it with the latest products. This has led him down the road of testing hundreds of products and creating in-depth “how-to” and informative guides that offer his first-hand experience. Other interests include working on cars, keeping fit through sports or his home gym, caravanning and drinking great coffee.

If you would like to read more about Darimo and the authors, you can visit our about page. This goes into great detail regarding how we test products, create our guides and everything else.

Follow #Darimo

Copyright © 2021. All rights reserved.