Need help with weed identification. I have tried weed killer like Scott’s weed and doesn’t work

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  • Is this from your lawn or the borders/beds?
    – Bamboo
    May 3, 2020 at 12:44
  • It looks like a grass species, so broad-leaf weedkillers including "lawn weedkillers" won't affect it. Hard to tell the exact species from your picture.
    – alephzero
    May 3, 2020 at 13:26
  • 1
    Definitely a grass. I advise trying to find an online grass identification tool for your area. I have had great success with this method. Sadly, if it is quackgrass, I am not sure if any selective herbicide is available.
    – Evil Elf
    May 3, 2020 at 13:27
  • It looks more like barley than couch grass to me. It could have acquired herbicide resistance from a domesticated variety. Are you near farmland?
    – Separatrix
    May 3, 2020 at 15:14
  • @Separatrix Barley is a species of grass, so it has the same natural resistance to broad leaf weed killers as any other type of grass. There are several "wild" species of barley as well as the cultivated varieties (which have been genetically modified by humans for about 4,000 years before Monsanto got a bad reputation for doing it!).
    – alephzero
    May 3, 2020 at 18:24

1 Answer 1


Dig it up and either re-seed or fill the hole with a piece of turf. This is the message behind the previous comments and it's what I do when I get it.

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