10 Best Concentrated Weed Killer Powder in The UK

Last updated on 04/07/2025

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Elixir Gardens 360 g/l Glyphosate Commercial Industrial Strength Weed Killer | Treats up to 3332 sq.m | Concentrated Herbicide/Weedkiller | 2 x 1 Litre Bottle + Measuring Cup & Gloves

Why We Love It

Effective weed control.
Super concentrated formula.
Large coverage area.

Main Highlights

Quickly & effectively clears areas of weeds and unwanted vegetation.
Super concentrated 360 gram/litre Glyphosate formula. DILUTION REQUIRED. Kills & eliminates weeds at the root.
2 litres treats up to 3332 sq. meters.
Perfect for a range of hard surfaces such as patios, decking, aggregates and driveways.
PLEASE NOTE: Depending on the type of weed and climate, please allow up to 7 days to see the effects of the treatment. Some weeds may take up to 4 weeks for the weedkiller to take effect.
IMPORTANT STOCK UPDATE: Depending on current stock levels you may receive a 2 Litre Gallup Glyphosate Bottle. This is exactly the same 360g/l glyphosate formula and is produced by the same manufacturer as Elixir Gardens Glyphosate.

Ready-to-use with no mess.
Eliminates over 175 weeds.
Safe for kids and pets.

Main Highlights

Ready-to-Use Convenience – This high-performance weed killer comes pre-mixed for immediate use. Simply pour into a sprayer and apply—no dilution, no measuring, and no mess.
Kills 175+ Weeds – Powerful weed killer that eliminates common and tough weeds like dandelions, nettles, thistles, and bindweed.
Perfect for Patios, Paths & Driveways – Tackle weeds in those hard-to-reach cracks and surfaces with ease. Ideal for gravel areas, fence lines, block paving, and concrete edges.
Pet & Child Safe Once Dry – Enjoy a weed-free garden without compromising on family safety. Once dry, it’s 100% safe for kids and pets to enjoy your outdoor spaces again.
Huge 5L Coverage – Up to 100 Sq meter – Tackle large areas with confidence! Great for home gardens, professional landscaping, and commercial property maintenance.

Weedol 2 x Lawn Weedkiller Easy Mix Liquid Concentrate 1L

Why We Love It

Efficiently eliminates unwanted moss.
Convenient and easy to use.
Promotes healthier lawn growth.

Main Highlights

Weedol 2 x Lawn Weedkiller Easy Mix Liquid Concentrate 1L
Brand : Weedol
Product type: WEED MOSS CONTROL AGENT

Deadfast PTO0010P Concentrated Weed Killer Sachets, 12 x 100 ml,Black

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Why We Love It

Potent systemic formula.
Targets roots effectively.
Varied plant response time.

Main Highlights

Systemic concentrated weedkiller
Action kills both above and below the ground
sometimes it can take longer to take affect depending on the species of the plant

Rootblast | Super Strength Concentrated Total Weed Killer - Glyphosate for Effective Weed Control - Kills Weeds down to the their roots (1 x 1L), Packaging May Vary

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Why We Love It

Concentrated formula enhances potency.
Glyphosate targets stubborn weeds.
Root-level action ensures efficacy.

Main Highlights

CONCENTRATED FORMULA: Rootblast weed killer is a powerful solution that comes in a concentrated form, making it highly effective at killing weeds down to the roots.
SUPER STRENGTH GLYPHOSATE: With a high concentration of glyphosate, Rootblast provides effective control over a wide range of weeds, including tough-to-kill perennial weeds.
KILLS WEEDS AT THE ROOT: Unlike other weed killers that only target the leaves of weeds, Rootblast penetrates deep into the soil to kill weeds at the root, preventing them from growing back.
EASY TO USE: Simply dilute Rootblast with water according to the instructions and apply to the affected areas with a sprayer for quick and easy application.
LARGE COVERAGE AREA: One 1L bottle of Rootblast can cover up to 1,666 square meters of land, making it a cost-effective solution for large gardens and properties. Choose Rootblast for powerful weed control and a weed-free garden all year round.

Elixir Gardens 1 Litre 360 g/l Glyphosate Commercial Industrial Strength Weed Killer | Treats up to 1666 sq.m | Concentrated Herbicide/Weedkiller

Why We Love It

Effective weed clearance.
Highly concentrated formula.
Extensive coverage area.

Main Highlights

Quickly & effectively clears areas of weeds and unwanted vegetation.
Super-concentrated 360 gram/litre Glyphosate formula. DILUTION REQUIRED. Kills & eliminates weeds at the root.
One 1 Litre bottle treats up to 1666 sq. meters!
Perfect for a range of hard surfaces such as patios, decking, aggregates and driveways.
PLEASE NOTE: Depending on the type of weed and climate, please allow up to 7 days to see the effects of the treatment. Some weeds may take up to 4 weeks for the weedkiller to take effect.
IMPORTANT STOCK UPDATE: Depending on current stock levels you may receive a 1 Litre Gallup Glyphosate Bottle. This is exactly the same 360g/l glyphosate formula and is produced by the same manufacturer as Elixir Gardens Glyphosate.

Elixir Gardens Gallup 1 Litre Glyphosate Deep Root-Killing Weed Killer | 360 g/l Super Strength Concentrated Industrial/Commercial Herbicide & Weedkiller | Treats 1666 sq. meters | x 1

Why We Love It

Highly concentrated formula.
Wide coverage area.
Eco-friendly breakdown.

Main Highlights

PLEASE NOTE: Depending on current stock, you may receive a 1L Elixir Gardens 360g/l Super Concentrated Glyphosate bottle. This is exactly the same strength and formula as Gallup and produced by the same manufacturer (Barclays).
Strongest weed killer available online in the U.K. For uncertified use. Contains 360 g/l glyphosate, The same as most professional grade herbicides.
One Litre treats up to 1666 square meters. That's over 0.4 of an acre.
Gallup Home & Garden is a domestic weed killer that contains 360 g/l glyphosate for effective control of annual and deep-rooted perennial garden weeds, including grasses, docks, nettles, willowherb, dandelion and bindweed. Kills most weeds in one application with no need to re-apply.
Inactivated on contact with the soil and is broken down by soil organisms to leave no lasting residues, allowing the area to be cultivated and re-planted 7 days after application or if the weather has been cool, after the weed leaves have yellowed or died back.
NO knapsack certificate needed. Dilute at 24ml per 1 Litre of water to treat an area of 40 sq/m. Apply when weeds are actively growing and have adequate leaf area to absorb the spray for best results, taking care to avoid over spray onto more desirable plants. Weeds may show first effects from a few days up to 4 weeks after depending on the weather and type of weed.

Doff Advanced Concentrated Weedkiller - 10 Sachets for Dilution in Water for Garden Protection – Kills Deep Rooted Weeds from Pathways to Driveways - Long Lasting Weed Control – Strong Weed Killer

23% Off

Why We Love It

Effective against tough weeds.
Convenient ready-to-dilute format.
Expertly crafted in the UK.

Main Highlights

EFFECTIVE ADVANCED WEED KILLER – Tackle stubborn annual and deep-rooted perennial weeds with Doff Advanced Concentrated Weedkiller. Its systemic action ensures thorough treatment and dependable long-lasting protection, making it ideal for garden beds and borders
READY-TO-DILUTE CONVENIENCE – Save time with these pre-measured weed killer sachets requiring dilution in water. Mix in a spray bottle to make application quick and hassle-free. Apply directly from the bottle for fast and easy weed control where needed
ELIMINATE & PREVENT – The glyphosate-based weedkiller solution eliminates weeds such as grasses, docks and more, destroying them at the roots. Spray when weeds are actively growing, directly onto the leaf area to absorb the spray
VERSATILE & RELIABLE – Designed to combat tough weeds like nettles, willowherb and climbing ivy, it’s ideal for any garden space needing a fresh, weed-free finish. Each 80ml extra strong weed killer sachet diluted with 800ml water treats weeds in areas up to 32m². Available in 3, 6 and 10 pack
WEEDED IN EXCELLENCE – With decades of expert experience, Doff products are your go-to for weed control. Our quality-crafted solutions are proudly made in the UK, offering safe, effective weed management, helping your plants thrive while keeping unwanted growth at bay

Doff Advanced Concentrated Weedkiller 10 x 80ml sachets

Why We Love It

Effective weed and root killer.
Great coverage up to 32m².
Allows replanting after use.

Main Highlights

Kills weeds and roots in and around your garden.
Easy to use, simply mix the sachet with water. For use and application in sprayers or watering cans.
Systemic weed killer for the control of annual and deep rooted perennial weeds.
Leaves no residual active ingredient in the soil, planting can take place as soon as weeds have died back.
Each sachet can treat up to 32 meters squared. Contains Glyphosate.

Doff Advanced Concentrated Weedkiller – 1L Ready for Dilution in Water for Garden Protection – Kills Deep Rooted Weeds from Pathways to Driveways - Long Lasting Weed Control – Strong Weed Killer

16% Off

Why We Love It

Potent formula eradicates weeds.
Convenient concentrate simplifies application.
Eco-conscious garden maintenance solution.

Main Highlights

EFFECTIVE ADVANCED WEED KILLER – Tackle stubborn annual and deep-rooted perennial weeds with Doff Advanced Concentrate Weedkiller. Its systemic action ensures thorough treatment and dependable long-lasting protection, making it ideal for garden beds and borders
EASY-TO-USE CONCENTRATED SOLUTION – Save time with this convenient concentrated weed killer formula. Mix with water in a spray bottle or watering can, making application quick and hassle-free. Apply evenly over the entire plant for fast and easy weed control where needed
ELIMINATE & PREVENT – The glyphosate-based weedkiller solution eliminates weeds such as grasses, docks and more, destroying them at the roots. Spray when weeds are actively growing, directly onto the leaf area to absorb the spray
VERSATILE & RELIABLE – Designed to combat tough weeds like nettles, willowherb and climbing ivy, it’s perfect for any garden space needing a fresh, weed-free finish. This 1L extra strong weed killer treats weeds in areas up to 400m²
WEEDED IN EXCELLENCE – With decades of expert experience, Doff products are your go-to for weed control. Our quality-crafted solutions are proudly made in the UK, offering safe, effective weed management, helping your plants thrive while keeping unwanted growth at bay

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We scanned 1545 products

We reviewed these offers relevant to the Concentrated Weed Killer Powder within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Elixir Gardens, JOVS, Weedol, Deadfast, Rootblast, Doff, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Concentrated Weed Killer Powder in the market, we considered we took a deep dive into 7726 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Elixir Gardens 360 g/l Glyphosate Commercial Industrial Strength Weed Killer | Treats up to 3332 sq.m | Concentrated Herbicide/Weedkiller | 2 x 1 Litre Bottle + Measuring Cup & Gloves. We love many things about this product by Elixir Gardens. What sets it apart from the competition is Effective weed control, Super concentrated formula, Large coverage area.
The best value product for most shoppers and where user satisfaction is continuously the highest is JOVS Weed Killer 2x 5L Ready to Use 10 L | Fast Acting Weed Killer for Patios, Driveways, Paths & Gardens | Kills Weeds to the Root | Pet & Child Safe Once Dry | Covers 100 Sq meter | No Mixing Neede. by JOVS based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Concentrated Weed Killer Powder and the best cost-to-value ratio is Doff Advanced Concentrated Weedkiller - 10 Sachets for Dilution in Water for Garden Protection – Kills Deep Rooted Weeds from Pathways to Driveways - Long Lasting Weed Control – Strong Weed Killerat Doff with a 23% discount.
Our list of the best Concentrated Weed Killer Powder is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Concentrated Weed Killer Powder in The UK

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We concluded that: