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Is this the dreaded Japanese Knotweed!! Ident and advise required


Hi, I have just come across this in a garden, have I correctly identified it as Japanese Knotweed, if so what is the next course of action as gardeners are not yet allowed to chemically treat it. image



  • artjakartjak Posts: 4,167

    Need to see the leaves Paul.

  • hmm, it doesn't have any on at the moment. 

  • nutcutletnutcutlet PeterboroughPosts: 26,555

    Has a resemblance to Leycesteria formosa.

    But as artjak says, we need to see the leaves. Shape of the whole plant and its base would be good as well

  • DovefromaboveDovefromabove Central Norfolk UKPosts: 79,271

    Don't think it's Knotweed - the dreaded JK has shoots and leaves growing alternately from each side of the stem - yours looks as if the shoots are growing in pairs.  

    Are there any leaves we can have a look at?

    “I am not lost, for I know where I am. But however, where I am may be lost.” Winnie the Pooh

  • artjakartjak Posts: 4,167

    Dove, do you know if JKWeed has slightly reddish stems?

  • SalinoSalino Posts: 1,609

    ..nothing like Knotweed...   might be Fennel..?

  • artjakartjak Posts: 4,167

    Paul, where did you hear that gardeners cannot chemically treat it?

  • FairygirlFairygirl west central ScotlandPosts: 47,145

    I think the stems are a bit redder on JK.  Is there a lot of it Paul, and what sort of height is it just now?

    It's a place where beautiful isn't enough of a word....

  • Yes leycesteria formosa does look familiar in the photos but so does JK. Does leycesteria formosa have multiple stems at the base like Japanese knotweed, she said that she thought a neighbour had some JK a while ago. 

    Ah well spotted DFA, so JK does not have leaves in pairs. Ok so I think we might be onto something. I might have to go back to get more photos, I shall take photos of the base, any leaves and stems. 

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