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Weedkiller on Lawn

bobloesbobloes Posts: 134
Hi All,

I use Green Thumb to provide weed and feed to my lawn, well grass, in the front.  I believe they use a weedkiller but I do not know which type.  I have tried ringing but no reply at present.
The question is can I put the grass cuttings in my compost heap or as a mulch over my potatoes?  I understood that some years ago the EC ensured that all domestic week killer became neutralised when in contact with the soil.  If that is true is there a time limit on the efficacy of the weedkiller in the dead plant?
I would appreciate your thoughts.

Cheers  keep safe



  • It will depend what they used but looking at the leaflet for Evergreen 4 in 1 it says don't use clippings from the next 4 mowings as mulch so best not to risk it I'd think.
  • FairygirlFairygirl Posts: 50,322
    I would normally wait about 6 weeks before putting in compost heaps/bins if i've used anything.
    It will depend on the growth rate and frequency you're cutting, so @Singing Gardener's advice is probably about the same response. :)
    It's tricky just now with many councils not collecting garden waste, so you may have to store it temporarily.
    It's a place where beautiful isn't enough of a word....

    I live in west central Scotland - not where that photo is...
  • bobloesbobloes Posts: 134
    Yes I should have said that normally I would take it to the tip but ours is closed.  However that does raise the point that the dump green waste is recycled so I would have anticipated that the weed killer does become ineffective with time.  I appreciate that their heaps get a lot hotter than our smaller ones  hence why I was thinking of a mulch on the tatties as they are not even above ground at present and very dry here in Weymouth.
  • Ah, just also noticed that Evergreen 4 in 1 says that the clippings will be safe to use after composting for 6 months.
  • bobloesbobloes Posts: 134
    Thanks for those thoughts - not quite sure where I am going to put all the grass cuttings.  However small beer in the overall scheme of things.  Cheers.
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