BEST DEALS THIS WEEK

10 Best Weed Killer For Japanese Knotweed - May 2026

19M consumers helped this year.

Last Updated: 27-05-2026

1

Roundup Tree Stump Weedkiller, Super Concentrate 250 ml

Roundup Tree Stump Weedkiller, Super Concentrate 250 ml

Roundup

9.8

9.8

CHECK PRICE

Show More

MORE DEALS (1)

2

Japanese Knotweed Injector 2021 Model Now with 7 Side Hole Needles

Japanese Knotweed Injector 2021 Model Now with 7 Side Hole Needles

jk injector

9.6

9.6

CHECK PRICE

Show More

MORE DEALS (1)

3

Roundup Fast Action Weedkiller, Ready to Use, Manual Spray, 3 Litre

Roundup Fast Action Weedkiller, Ready to Use, Manual Spray, 3 Litre

Roundup

9.5

9.5

CHECK PRICE

Show More

MORE DEALS (1)

4

Bayer Garden 2 x Path, Patio & Drive Weed Killer & Watering Can Set - 3 x 8g Sachets per pack treats upto 75sqm - Kills Ground Elder, Nettles, Docks, Couch Grass & Japanese Knotweed.

Bayer Garden 2 x Path, Patio & Drive Weed Killer & Watering Can Set - 3 x 8g Sachets per pack treats upto 75sqm - Kills Ground Elder, Nettles, Docks, Couch Grass & Japanese Knotweed.

Bayer Garden

9.2

9.2

CHECK PRICE

Show More

MORE DEALS (1)

5

NEW JAPANESE KNOTWEED INJECTOR PRO 2019 model NOW WITH 10 SIDE HOLE NEEDLES

NEW JAPANESE KNOTWEED INJECTOR PRO 2019 model NOW WITH 10 SIDE HOLE NEEDLES

jk injector

9.1

9.1

CHECK PRICE

Show More

MORE DEALS (1)

6

Roundup Fast Action Weedkiller Pump 'N Go Spray – 5L Ready-to-Use Glyphosate Formula – Kills Weeds & Roots with Visible Results in 1-2 Days – Refillable Pressure Sprayer with Extendable Lance

Roundup Fast Action Weedkiller Pump 'N Go Spray – 5L Ready-to-Use Glyphosate Formula – Kills Weeds & Roots with Visible Results in 1-2 Days – Refillable Pressure Sprayer with Extendable Lance

Roundup

8.8

8.8

CHECK PRICE

Show More

MORE DEALS (1)

7

Roundup Tree Stump and Root Killer 250 ml Liquid Concentrate Weedkiller

Roundup Tree Stump and Root Killer 250 ml Liquid Concentrate Weedkiller

Miracle-Gro

8.6

8.6

CHECK PRICE

Show More

MORE DEALS (1)

8

Gallup Biograde Weedkiller RTU 4L - Extra Strong Glyphosate Spray for Effective Weed Control on Driveways, Gardens, Paths & Patios, Quick Application

Gallup Biograde Weedkiller RTU 4L - Extra Strong Glyphosate Spray for Effective Weed Control on Driveways, Gardens, Paths & Patios, Quick Application

Gallup

8.4

8.4

CHECK PRICE

Show More

MORE DEALS (1)

9

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

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

Elixir Gardens

8.2

8.2

CHECK PRICE

Show More

MORE DEALS (1)

10

Roundup Fast Action Pump 'N Go Weed Killer 5L Refill, Clear, 112113

Roundup Fast Action Pump 'N Go Weed Killer 5L Refill, Clear, 112113

Roundup

8.1

8.1

CHECK PRICE

Show More

MORE DEALS (1)