Roundup Biactive (Garden Sizes)
Roundup Biactive (Garden Sizes)
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Roundup Biactive Weedkiller
Roundup Biactive is a powerful, professional-grade systemic herbicide designed to control a wide range of annual and perennial weeds, including difficult and invasive species such as Japanese knotweed. Trusted for its reliability and cost efficiency, it is suitable for use with both knapsack and boom sprayers, making it ideal for gardeners, land managers, and large-scale weed control.
Formulated with glyphosate, Roundup Biactive works by penetrating the leaves and moving through the plant to the roots, ensuring thorough, long-lasting weed control. Its highly concentrated formula delivers excellent coverage, making it a cost-effective choice for treating larger areas.
⚠️ Not clover safe – avoid use where clover is present or required.
Always use plant protection products safely. Read the label and product information before use.
Key Benefits of Roundup Biactive
- Controls a broad spectrum of weeds, including invasive species
- Effective against Japanese knotweed
- Systemic action – kills weeds down to the root
- Suitable for knapsack and boom sprayers
- Cost-effective concentrate with excellent coverage
- Long-lasting and fast-acting results
- Ideal for amenity, agricultural, and garden use
Product Information
- Active ingredient: Glyphosate
- PCS Number: 05266
- Available sizes: 500 ml, 1 litre
- Rainfast: 6 hours
- Clover safe: No
- Grazing interval: Livestock may return after 5 days
Dilution & Coverage
- Dilution rate:
- From 30 ml to 60 ml per litre of water, depending on weed type and situation
- Do not exceed 60 ml per litre
- Always refer to the manufacturer’s label for full dilution guidance
- Coverage:
- 6 litres treats up to 1 hectare
Application Guidelines
- Apply using a knapsack or boom sprayer
- Treat actively growing weeds between April and November
- Spray leaves until thoroughly wetted, but avoid run-off
- Do not apply fertiliser, manure, or other pesticides for at least 5 days after treatment
- Visible weed destruction may take up to 14 days – do not reapply before this time
Cultivation & Reseeding
- Herbicide translocation takes 7–10 days to fully kill roots
- Broad-leaved weeds may take longer to die back
- Use visible destruction or refer to the label before ploughing or reseeding
Weeds Controlled by Roundup Biactive
| Weed | Effectiveness |
|---|---|
| Brambles | Susceptible |
| Buddleia | Susceptible |
| Buttercup (Creeping) | Susceptible |
| Chickweed | Susceptible |
| Daisy (Common) | Susceptible |
| Dandelion | Susceptible |
| Dock (Broadleaf & Curled) | Susceptible |
| Gorse | Moderately Susceptible |
| Japanese Knotweed | Susceptible |
| Nettle (Common) | Susceptible |
| Plantain species | Susceptible |
| Ragwort | Susceptible |
| Rush (Soft) | Susceptible |
| Thistles (Creeping, Sow, Spear) | Susceptible |
| Willow Herb | Susceptible |
| Yellow Iris | Susceptible |
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Delivery Info
Delivery Info
Here at Kennedy's Home And Garden, we have joined forces with DPD to ensure all packages are delivered promptly and safely to you. We ship to all mainland countries within the EU. Deliveries take place Monday to Friday, excluding bank holidays. Once your order has been dispatched from our warehouse, you will be notified by email. If there is a delay with your order for any reason, you will be contacted immediately.
Due to Brexit, we are temporarily unable to ship to the UK. Deliveries to Northern Ireland will continue as usual.
Delivery Times
| Ireland (ROI & NI) | EU (Mainland Only) |
| 1-3 Working Days | 4-6 Working Days |
Some products have an extended delivery time; this is noted on the products.
Delivery Rates
| Country | Orders Under €99 | Orders Over €99 |
| Ireland (ROI & NI) | €7.99 | €0.00 |
| Austria | €24.99 | €13.00 |
| Belgium | €21.99 | €10.00 |
| Czech Republic | €24.99 | €13.00 |
| Denmark | €24.99 | €13.00 |
| Finland | €36.99 | €25.00 |
| France | €21.99 | €10.00 |
| Germany | €21.99 | €10.00 |
| Hungary | €28.99 | €17.00 |
| Italy | €34.99 | €23.00 |
| Luxenburg | €21.99 | €10.00 |
| Netherlands | €21.99 | €10.00 |
| Poland | €21.99 | €13.00 |
| Portugal | €36.99 | €29.00 |
| Slovakia | €28.99 | €17.00 |
| Slovenia | €28.99 | €17.00 |
| Spain | €34.99 | €23.00 |
| Sweden | €34.99 | €23.00 |
A selection of the products we sell are only licensed for sale within the Republic of Ireland and cannot be shipped outside of the country. These products are noted as only being available within the Republic of Ireland on the individual product pages.
There may be an additional charge on certain bulky items. This charge will be clearly marked on applicable products and will be explained on the checkout page before payment has been made.

