Price: £24.30
(as of Sep 09, 2025 08:41:52 UTC – Details)

From the manufacturer

Deadfast Weedkiller Concentrate

Deadfast Weedkiller will kill most living plant tissue on paths, drives and wasteland. It can be applied straight from the sachet to clear well established woody weeds and trees, or diluted down to eradicate large areas of weeds and plants. The active ingredient works through systemic action as it is carried throughout the plant by the sap. After absorption through foliage or cut stumps, the Ammonium Salt of Glyphosate is carried to the outer extremities of the plant’s root system where it begins to work. Effects should be visible in 7-14 days.

Deadfast Weedkiller is a total herbicide and as such care should be taken that it does not come into contact with wanted plants. After use ensure that garden sprayers or other vessels used for application are thoroughly
cleaned, as traces of product left in equipment can damage or destroy plants sprayed later.

Product Features Kills the weed and its roots Concentrated weedkiller for use neat or diluted depending on the type of weed Contains Glyphosate

How to Use

Spray Application

Cut the corner off the sachet and pour the contents (100ml) into the application vessel and then add clean water to make 1 full litre of productSpray lightly, or pour gently, over leaves until they are thoroughly wet but take care to avoid run offFor best results apply when weeds are actively growingEffects can be seen in a few days but full control can take up to 4 weeksIf it rains within 6 hours of application then effectiveness can be reduced and re-application is advisedApply this product carefully. Ensure spraying takes place only when weeds are actively growing (normally March to October) and is
confined only to visible weeds including those in the 30cm swath covering the kerb edge and road gulley – do not overspray drains

Direct Application

To eradicate woody and well-established weeds first cut back the plant so that the exposed stem or trunk is near ground levelApply Deadfast Weeedkiller within 4 days of cutting back the plantCut the corner off the sachet and pour the contents directly onto exposed wood or plant stem. Ensure an even coating is applied but take care to avoid wanted plants

Systemic concentrated weedkiller
Action kills both above and below the ground
sometimes it can take longer to take affect depending on the species of the plant