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Japanese Knotweed

24

Posts

  • KiliKili Posts: 1,104
    edited September 2022
    Im sorry if it came across that way I’m German and probably bit more direct ( husbands account ) I just really worried how I’m going to deal with it right next to house all across the lawn Glyphosate is banned here I have done lots of research but just confused as doesn’t look like typical knotweed but also can’t find what else it could be maybe it’s because it’s been treated with some other weed killer & this is regrowth

    @leslie.gibbsyUIawWDZ    Download the Plantnet app to a smart phone and you can scan it with your phone and it will give you a pretty accurate description of what it is. I used it when out for a walk and saw what I thought was JKW and used plantnet to confirm my diagnosis.

    I wouldn't dig it out. Just a small piece breaks off when your digging and it will take root if left in the soil.

    If Glyphosate is banned in France you need to contact your local agri dept and find out what can be used as unless you have something like Glyphosate ( and even with that repeated treatment can take 5 years to get rid) you'll never get rid of it.

    'The power of accurate observation .... is commonly called cynicism by those that have not got it.

    George Bernard Shaw'

  • fidgetbonesfidgetbones Posts: 17,618
    Are you sure it is Japanese knotweed? Those stems look like my Euphorbia griffithi that are dying down now.
  • edited September 2022
    Possibly I didn’t  see the leaves before it was cut down in August to ground I have one photo from distance in Spring plant  to left of photo Are you stems segmented or smooth ? 
  • @fidgetbones Do you still have milky sap from your E griffithi or have the stems dried out?
    I have worked as a Gardener for 24 years. My latest garden is a new build garden on heavy clay.
  • fidgetbonesfidgetbones Posts: 17,618
    No they have dried out.  The heatwave frazzled them.  I'll see if I can get a photo.
  • fidgetbonesfidgetbones Posts: 17,618

  • fidgetbonesfidgetbones Posts: 17,618
    edited September 2022
    Sorry, phone photos.  If I cut the stems that are red and not brown, there is still a bit of milky sap.  Thats fairly definitive for euphorbia.  Maybe you could cut the stems of the proposed JKW  and see if they do the same? Also Japanese knotweed stems are usually hollow.
  • FairygirlFairygirl Posts: 55,117
    Use it? For what?
    Annoying the neighbours maybe  :D
    One has to laugh at these spammers, eh @pansyface?
    It's a place where beautiful isn't enough of a word....



    I live in west central Scotland - not where that photo is...
  • bédébédé Posts: 3,095
    edited January 2023
    Constant cutting will solve the problem in your garden.  What comes in again from next door, is another problem. Composting the waste should b e OK.

    leslie.gibbsyUIawWDZ said:
    Im sorry if it came across that way I’m German and probably bit more direct ( husbands account ) I just really worried how I’m going to deal with it right next to house all across the lawn Glyphosate is banned here I have done lots of research but just confused as doesn’t look like typical knotweed but also can’t find what else it could be maybe it’s because it’s been treated with some other weed killer & this is regrowth
    I favour "curt but helpful".  All this luvvy-dovey time wastingg niceness to stangers just wates time and space.  (btw,  pansy.. was herself rather curt in my opinion.)
     location: Surrey Hills, England, ex-woodland acidic sand.
    "Have nothing in your garden that you don't know to be useful, or believe to be beautiful."
  • DovefromaboveDovefromabove Posts: 88,147
    @bédé this is an old thread that was trawled up by spammers.  Hopefully the OP has got to the root of the problem by now. 
     :) 

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





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