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Kill Grass and Weeds

I know that somewhere on this forum there is a product that can be applied to weeds/grass to prepare an area for an allotment but, i cannot find it. Some kind of phosphate product that you apply and then cover the ground in plastic.

Grateful for any response


  • LynLyn Posts: 22,852


    Gardening on the wild, windy west side of Dartmoor. 

  • nutcutletnutcutlet Posts: 27,295

    Likely to be glyphosate, that's what it does, kills weeds. But it doesn't need covering with plastic. 

    In the sticks near Peterborough
  • LynLyn Posts: 22,852

    Thats the one Nut, i had a dyslexic moment there!.

    Gardening on the wild, windy west side of Dartmoor. 

  • nutcutletnutcutlet Posts: 27,295

    Lyn, one of the GQT panel always used to say glysophate. Can't remember who, years ago now.

     I didn't notice you'd mis-spelled it, I was just agreeing with youimage


    In the sticks near Peterborough
  • That's the product. Where can it be purchased? Places like B & Q or garden centres?


    Is it expensive?









  • DovefromaboveDovefromabove Posts: 86,036

    Glyphosate is the active ingredient in several brands of weedkillers of which Roundup is probably the best known, so go to a garden centre or DIY store and check on the labels. 

    Weedkillers containing glyphosate need to be applied in warmish weather when the weeds are in active growth and have plenty of leaf to soak up the liquid.  Treat according to the directions on the pack. You should not cover the weeds with plastic when they've been treated.  

    The trick with glyphosate is that you must leave the weeds until they die and turn brown before you pull them up.

    If you pull them up before then the roots will still be alive and they will grow again and you'll be back where you started.  

    Work out how many square metres you need to treat - the containers will say how big an area they cover - that way you won't buy more than you need.

    Once the liquid has dried it is harmless to children and pets etc, and it does not linger in the soil so as soon as your weeds are dead you can get on with planting your allotment. 


    Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.

  • LynLyn Posts: 22,852

    Its cheaper if you just by it be name instead of 'brand' name., such as Roundup, like anything, you pay for the name. 

    Gardening on the wild, windy west side of Dartmoor. 

  • WelshonionWelshonion Posts: 3,114

    Yes, but you will be hard pushed to buy it without a brand name.

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