Laser 5L is a powerful, systemic herbicide designed for the selective control of broadleaf weeds in grassland and non-crop areas. With fluroxypyr (200 g/L) as its active ingredient, Laser provides effective, long-lasting control of persistent weeds, such as thistles, dock, and ragwort, while being safe for established grass species.
Laser works by being absorbed into the weed’s system, targeting both above-ground and root systems for complete control. It is particularly effective on tough weeds in pastures, forestry land, and industrial sites, making it ideal for farmers, landowners, grounds maintenance contractors, and councils.
Features & Benefits
Systemic action provides complete control of both top growth and roots
Effective on hard-to-control weeds like ragwort, dock, and thistles
Selective control, ensuring grass is left unaffected
Long-lasting weed control with residual effects
Flexible application methods for boom sprayers and knapsack sprayers
Ideal for grassland, pastures, and non-crop areas
Cost-effective 5L size for large-scale operations
Application Rates
Boom Sprayer
Apply at 1.0 – 2.0 L/ha in 100 – 200 L of water.
Adjust the rate based on the target weed species and field size.
Knapsack Sprayer
Mix 50 ml per 10 L of water, treating approximately 400 m².
Note: Always refer to the product label for specific crop and weed guidelines.
Type of Weed Control
Systemic post-emergent herbicide for broadleaf weeds
Weeds Targeted
Thistles (creeping and spear)
Ragwort
Dock (broad-leaved and curled)
Dandelion
Buttercup
Plantain
Chickweed
Groundsel
Speedwell
Common poppy
Active Ingredient
Fluroxypyr (200 g/L)
Areas of Use
Grassland and pastures
Non-crop land (industrial sites, roadside verges)
Forestry
Amenity areas (parks, sports fields)
Agricultural land (to control weeds in grazing fields)
Coverage
One 5L pack treats up to 5 hectares depending on the application rate and method used (boom spraying).
For knapsack sprayers, one 5L pack covers approximately 1,000 m².
MAPP Number
MAPP 14791
Period of Use
Best applied during the active growth stage of weeds (spring to autumn).
Avoid application during frost conditions or drought stress on plants.
Professional Use Notice
Laser 5L is a professional-use herbicide. Users must hold the necessary PA1 and PA2/PA6 certification under UK pesticide legislation and comply with all safety guidelines and environmental regulations for application.
Why Order From Green-tech?
Industry-leading supplier of professional herbicides and landscape management products
Reliable UK-wide delivery with excellent customer service
Access to a full range of weed control, fertiliser, and turf care products
Expert technical support to guide you through safe and effective herbicide use
Bulk purchase discounts available for contractors and councils
Please Note:
This product is dispatched directly from our trusted supplier’s warehouse. While we aim to keep product availability as accurate as possible, we do not have live stock control for these items. Availability is subject to change, and delivery can take up to 15 working days, depending on stock levels at the time of order.
Tracking information will be provided where available, but please note this is dependent on the supplier’s shipping process. If you have any questions about lead times or delivery, our team is happy to help before you place your order.

Specification Detail
Application Rate (Boom) 1.0 – 2.0 L/ha in 100–200 L water
Application Rate (Knapsack) 50 ml per 10 L water per ~400 m²
Type of Control Systemic post-emergent herbicide for broadleaf weeds
Weeds Targeted Thistle, ragwort, dock, dandelion, buttercup, plantain, chickweed
Active Ingredient Fluroxypyr (200 g/L)
MAPP Number 14791
Areas of Use Grassland, pastures, non-crop land, forestry, amenity areas
Coverage Up to 5 hectares (boom); approx. 1,000 m² (knapsack)
Period of Use Spring to autumn; avoid frost or drought stress