Barrier H 5L is a powerful non-selective herbicide designed to deliver effective weed control in hard surfaces and non-crop areas. With its advanced formulation, Barrier H is ideal for professional use on paths, roads, railways, industrial sites, and other non-crop areas where weed management is essential.
Barrier H 5L is a highly effective herbicide for the control of Common Ragwort, a toxic weed that can pose a significant risk to livestock and the environment. Specially formulated to destroy Ragwort at all stages of growth, Barrier H works swiftly to eliminate this deadly plant and prevent its spread, making it ideal for professional use by councils, highway authorities, and land managers.
This glyphosate-based herbicide acts quickly by penetrating weeds’ leaves and roots, ensuring complete eradication. Whether you're dealing with tough perennial weeds or annuals, Barrier H delivers fast, reliable results. Features & Benefits
Non-selective herbicide for total control of a wide range of weeds and grasses
Effective on all stages of Ragwort growth: rosettes, flowering plants, and seedlings
Destroys Ragwort from the root for complete eradication
Glyphosate-based formulation for effective and complete root system control
Ideal for hard surfaces and non-crop areas such as industrial sites, railways, roadways, and fence lines
Fast-acting and efficient with visible results within 7-10 days
Safe for use in areas where other plants are not a concern, preventing the spread of unwanted vegetation
5L pack size ideal for medium to large area treatments
Suitable for contractors, landscapers, councils, and land owners
Application Rates
General Weed Control: Apply 4-6L per hectare diluted in 100-200L of water
Spot Treatment: For smaller areas, mix 40ml per litre of water and apply directly to weed foliage using a knapsack sprayer
Boom Sprayer Application: Use 4-6L per hectare for larger areas, adjusting the dilution based on weed density and target area size
For tiny seedlings: Apply 5L of Barrier H to treat up to 1600 seedlings
For larger, flowering plants: Apply more Barrier H, with 1 container sufficient for up to 200 large flowering plants or rosette stage plants
Ensure full coverage: Apply the herbicide to the whole plant, ensuring it is well wetted but not to the point of runoff. Larger plants will require more product for thorough coverage.
Best Application Timing: Apply during active weed growth for best results, typically from spring to autumn
Note: Always check the product label for specific instructions and safety information regarding application rates and environmental precautions.
Type of Weed Control
Systemic, non-selective herbicide that targets broadleaf weeds and grasses
Works by penetrating and disrupting the plant’s root system, causing complete destruction
Ideal for total vegetation control in areas where selective herbicide use is not possible
Weeds Targeted
Effective on annual and perennial weeds, including dock, dandelions, ragwort, and thistles
Common Ragwort (Jacobaea vulgaris): Effective at all stages of growth, including seedlings, rosettes, and flowering plants
Other broadleaf weeds (though primarily targeted for Ragwort control)
Control of grasses, including ryegrass and bentgrass
Ideal for controlling hardy woody vegetation in non-crop areas
Active Ingredient
Glyphosate (360g/L)
Areas of Use
Hard surfaces such as roadsides, pathways, car parks, and railways
Non-crop areas including industrial sites, storage yards, and fence lines
Forestry areas for weed management around tree plantations and saplings
Public spaces such as parks, amenity grasslands, and sports pitches
Coverage
1L of Barrier H provides enough solution for approximately 200-300m² depending on application method and weed density
5L pack covers an area of 1 hectare at the recommended application rate
5L of Barrier H can treat up to 1600 tiny Ragwort seedlings
For larger flowering plants or rosette-stage Ragwort, 5L may cover up to 200 large plants
Coverage will vary depending on the size and stage of the plant
MAPP Number
MAPP No: 10136
Period of Use
All year round: Apply at any stage of growth for continuous control
Most effective when applied in spring to autumn, but can be used year-round for active growth stages

Avoid application during frost or drought conditions for optimal results
Not effective on stressed weeds; apply when weeds are fully emerged and actively growing
Professional Use Notice
Barrier H 5L is a professional-use only herbicide and should be applied by individuals holding the necessary PA1 and PA6 certification. Ensure compliance with UK pesticide regulations and follow all safety guidelines when using the product to minimize risk to the environment and non-target organisms.
Why Order From Green-tech?
Specialist supplier for professional landscapers, councils, contractors, and land owners
Fast, reliable UK-wide delivery
Access to a comprehensive range of weed control products, fertilisers, and land management tools
Expert advice and technical support available to ensure correct product use
Bulk order options for large-scale projects and contractors

Specification Detail
Application Rate 5L per 1600 seedlings, up to 200 large plants for flowering or rosette stage Ragwort
Weeds Targeted Common Ragwort (Jacobaea vulgaris), other broadleaf weeds
Active Ingredient Glyphosate (360g/L)
MAPP Number 10136
Areas of Use Roadways, railways, forestry, pastures, public spaces, industrial sites
Coverage 5L = Up to 1600 seedlings or 200 large plants
Period of Use All year round, with best results in spring to autumn