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I am looking to try out a new method of returfing for an upcoming job and was looking for some advice before I start.

Up until now I have generally skimmed off the old lawn, either by hand or using a turf cutter, before rotavating and laying new turf. The system that I have heard of (and what I want to try out) is to spray the old lawn with weed killer a couple of weeks beforehand and then simply rotavating the dead lawn and raking out any unwanted material.

I did try this once before using Roundup but, despite a good covering with a concentrated mix (at the correct time) it barely touched the grass.

Please can someone advise the best weed killer to use and the process to follow?

Thanks,

Dave

 

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Replies

  • Hi Dave

    Glyfos for sure.

    Paul

  • PRO
    Co you even need to do anything with the old you may just be able to lay straight on top of the old depending on the edges of the lawn. Depends if it can stand to be slightly raised or not.
  • PRO

    Gallup 360, used it to kill grass loads of times 

  • another here for gallop 360, use it on grass around fences/trees all the time

  • PRO

    Thanks guys, two votes for Gallup so will try this. Do you know if it's okay to lay new turf on the area a couple of weeks later? It doesn't leave too much residual toxin does it?

  • PRO Supplier

    Hi Dave,

    You need to be careful - while the effects/ residues of glyphosate are normally all but gone within two days in SOIL,  if you plan to sprayoff a lawn and turf straight over it - the glyphosate can be held in the dying grass/ foliage for a lot longer - Roundup advise turning the soil for safety then laying new turf/ seeding.

    Also in colder weather microbial soil activity will be slower so it will not breakdown as quickly.

    Check the label as Gallup, like Roundup,  comes in a number of variations. Here to help if you need  - Gallup or other brands.....

    0800 0326262, 01778 394052

  • PRO

    Great advice, thank you again. One last question... Are the clients pets safe using this stuff? Do I need to tell them to keep them indoors for a time? Definitely don't want to be responsible for killing the family pet!

    • PRO Supplier

      Yes, general advice is keep pets, children and other animals..(!)... off, until spray has dried. Grazing animals are different but I am guessing there are no cows, horses etc present in the back garden...

      If in doubt check the label

  • The merest drift of Roundup will kill grass, so I'm not sure why it hasn't worked for you Dave.  Maybe it rained soon after or it was cold and the grass wasn't growing, in which case, it takes time.

    Anyway, we have approached this sort of job many, many times and depending on the budget, tackled it both ways. The best? Spray, clean off turf, rotorvate and prep.  Next best - spray, strim off grass to soil(mind the windows!) rotorvate and prep.  Do not lay grass on grass, unless the client is looking to save the £££'s - but even then I would be thinking of my reputation and give it a miss.

  • if we are laying a new lawn we very rarely spray it with weedkiller, unless the lawn is bad. we always lay a loam soil over the top of the rotovated soil and  I don't see there is any need for the weedkiller. when its been properly rotovated and any weeds are picked out, its absolutely fine and it cuts down on the use of chemicals. the grass rotovated in is good for the soil as well

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