Japanese knotweed or not?

Posts

• JennyJ Posts: 10,576

  August 2018

  Those are much better pictures, and unfortunately it does look like it could be Japanese knotweed.

  
  

  There's an ID sheet on this website:http://www.nonnativespecies.org/index.cfm?sectionid=47

  
  

  And the RHS's advice is here: https://www.rhs.org.uk/advice/profile?pid=218.

  
  
  

  Doncaster, South Yorkshire. Soil type: sandy, well-drained
  

  0
• Ladybird4 Posts: 37,906

  August 2018

  Sadly I have to agree with Jenny J.
  

  Cacoethes: An irresistible urge to do something inadvisable
  

  0
• archerm1 Posts: 13

  June 2019 edited June 2019

  Nah, disagree. 
  
  The leaves are the wrong shape, see how they're flat near the stem-side? 
  
  JKW is heart shaped and the stems aren't as spindly. 
  
  I agree it looks like it, possibly a relative. But for me that is not JKW.
  
  Edit: the leaves are what's bugging me. They do look like JKW leaves now that I've gone back to other pics but unless it's from a very young plant, the stem just looks wrong to me.
  
  Did you ever get it confirmed?

  0
• caledonia64 Posts: 18

  June 2019

  Muddle-Up said:

  Agreed with the clematis.....here's a pic of JK with flowers, don't know if that will be any help
  
  

  
  

  that flowers looks like mile a minute flowers tae me.
  

  0
• *Astrantia* Posts: 307

  June 2019

  I’ve just googled jkw leaves and try seem more heart shaped than your photos, maybe post some more detailed photos tomorrow to give everyone a better idea but it’s not lookinglike jkw at the moment?

  0
• Ladybird4 Posts: 37,906

  June 2019

  @Caledonia Russian Vine or Mile-a-Minute vine and JKW are related hence the flower similarity.

  @*Astrantia* the original post was August last year so the original poster may not see your post.
  

  Cacoethes: An irresistible urge to do something inadvisable
  

  0