Price: £31.99 - (£5.57 / l)
(as of Jun 21, 2025 05:56:35 UTC – Details)
From the manufacturer
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Results in 48 hours
Our fast acting formula means visible results in just 48 hours, working right in front of your eyes!
Kills right to the roots
Travels through the leaves straight to the root to prevent weeds from growing back or regenerating.
Perfect for paths, drives, patios and flower beds
Use all over the garden on paths, drives, patios and flowerbeds to keep them free from pesky weeds.
Degrades naturally in soil to allow replanting
Degrades naturally in soil leaving no residue, meaning you can start replanting in just 7 days.
1 Results In 48 Hours
2 Kills To The Root
3 Paths, Drives, Flowerbeds
4 Replant In 7 Days
Fast and effective weed control that gets to work within hours of application
Ready to use straight from the bottle, this premixed glyphosate formula moves through weeds all the way to the roots and is naturally broken down within a week by micro-organisms in the soil, so you can get planting again.
Our Pump ‘N Go sprayer offers a one touch trigger system and an extendable wand – it gets you closer to weeds without bending, so you can remove weeds faster and easier than ever – 3 mins of continuous spray with the 2.5 litre pack, and 10 mins in the 5 litre pack.
Why should I use ROUNDUP Fast Action Ready To Use Weedkiller?
A multi-purpose weedkiller, ROUNDUP Fast Action Ready To Use Weedkiller kills annual and deep rooted perennial weeds, including grasses, dandelions, docks, nettles, ground elder, bindweed and thistles. It is inactivated on contact with soil.
Where can I use ROUNDUP Fast Action Ready To Use Weedkiller?
Approved for use all around the garden, on gravel areas, paths, drives and along fences. ROUNDUP Fast Action Ready to Use Weedkiller can be used to clean up weedy areas before planting vegetables, flowers, shrubs and to renovate overgrown areas.
When should I use ROUNDUP Fast Action Ready To Use Weedkiller?
Spray any time when weeds are actively growing and have adequate leaf area to absorb spray. Apply in calm conditions to avoid drift onto cultivated plants. Rain within 6 hours of spraying reduces effectiveness and repeat treatments may be necessary.
How do I use ROUNDUP Fast Action Ready To Use Weedkiller?
Apply spray evenly to wet the leaves of the weeds, avoiding run-off. Leave weeds 7 days before digging or soil cultivation, for the weedkiller to move to the roots. Repeat application may be necessary, should new growth occur.
Is ROUNDUP Fast Action Ready To Use Weedkiller safe to use on areas used by children and pets?
Keep children and pets away from treated areas until spray has dried. Keep out of the reach of children.
Compare our range of weed control products
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Customer Reviews
4.4 out of 5 stars 15,091
4.5 out of 5 stars 1,340
4.1 out of 5 stars 224
4.4 out of 5 stars 5,748
4.4 out of 5 stars 4,800
4.3 out of 5 stars 5,897
Price
£5.09£5.09
£43.54£43.54
£6.00£6.00
£8.99£8.99
£8.00£8.00
£15.90£15.90
Ready to use
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Fast-acting
Within 1-2 days
Within 2-4 days
From 1 hour
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Within days
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Naturally breaks down in soil
In 7 days
In 7 days
In 1 day
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In 7 days
In 7 days
Kills weeds to root (systemic)
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Allows replanting
In 7 days
In 7 days
In 1 day
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In 7 days
In 7 days
For beds, borders, veg patches
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For paths, patios, drives
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For tough weeds
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For tree and shrub stumps
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Refill for Fast Action Roundup Pump ‘N Go ready to use weed killer
Go for up to 3 minutes of continuous spraying
Systemic weed killer that kills from the inside out
Kills the root so weeds don’t come back
Results visible in 1-2 days
Customers say
Customers find the weed killer effective at killing weeds quickly, with one mentioning it works well on cracks in paving. The product is easy to use with garden sprayers and provides quick results within 24 hours. They appreciate its value as a refill, with one noting it’s economical in larger containers, and its effectiveness against various plants including ivy.
