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Knotweed or other weed

rosehenderson90rosehenderson90 Scotland Posts: 75
Hi folks,

Does anyone know if this is Japense knotweed? We've had a message around our allotment about it, not sure how to ID but this looks a bit suspicious to me



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  • GreenbirdGreenbird Posts: 237
    edited May 2021




    Seems to be lacking the distinctive red veins and heart shaped leaf. But there are definitely enough similarities to be a little concerned. 

    My gut says no, but I'm not a professional.


  • LynLyn DevonPosts: 21,137
    That is what I call Sorrel,  not sure if it’s the correct name but yours isn’t knotweed. 
    Gardening on the wild, windy west side of Dartmoor. 

  • rosehenderson90rosehenderson90 Scotland Posts: 75
    Ohhh that's both @Lyn and @Greenbird , phew I am so glad!!!!!

    Those photos will come really in handy for future ID, as apparently there is some growing here but as of last week they said it wasn't in anyones beds
  • DovefromaboveDovefromabove Central Norfolk UKPosts: 82,142
    I'd have said it looks like Broad-leaved Dock 
    https://www.rhs.org.uk/advice/profile?PID=989
    “I am not lost, for I know where I am. But however, where I am may be lost.” Winnie the Pooh







  • LynLyn DevonPosts: 21,137
    You’re probably right Dove,   That’s only what I call it, it throws up a red spike type flower if it’s left. 

    Gardening on the wild, windy west side of Dartmoor. 

  • DovefromaboveDovefromabove Central Norfolk UKPosts: 82,142
    Scrumple it in your hands and rub it on nettle stings @Lyn :D
    “I am not lost, for I know where I am. But however, where I am may be lost.” Winnie the Pooh







  • pippippippip Posts: 24
    That's knotweed.
    I've loaded some images for you to compare.


  • LynLyn DevonPosts: 21,137
    Scrumple it in your hands and rub it on nettle stings @Lyn :D
    Got plenty of those as well😀
    Gardening on the wild, windy west side of Dartmoor. 

  • MolamolaMolamola BelgiumPosts: 99
    Sorry to say that it looks like knotweed to me too (I have some in my garden).  Is it actually coming up through tarmac in your second last picture? Wow...
  • Chris-P-BaconChris-P-Bacon Posts: 939
    No. Different leaf shape. JKW is distinctly "squared off" at the petiole.
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