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Knotweed or other weed

rosehenderson90rosehenderson90 Posts: 83
in Plants
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 Posts: 23,082
    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 Posts: 83
    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 Posts: 86,989
    I'd have said it looks like Broad-leaved Dock 
    https://www.rhs.org.uk/advice/profile?PID=989

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





  • LynLyn Posts: 23,082
    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 Posts: 86,989
    Scrumple it in your hands and rub it on nettle stings @Lyn :D

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





  • pippippippip Posts: 27
    That's knotweed.
    I've loaded some images for you to compare.


  • LynLyn Posts: 23,082
    Dovefromabove said:
    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 Posts: 106
    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: 943
    No. Different leaf shape. JKW is distinctly "squared off" at the petiole.
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