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japanese knotweed

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    #32
    mikeybrennan
    Closed Accounts Posts: 869 ✭✭✭mikeybrennan


    Shefwedfan wrote: »
    That is the best one I have heard in a long time, how the hell did he manage that?
    Drove over cuttings I believe

    Started growing inside the wheel arches


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    #33
    my3cents
    Closed Accounts Posts: 9,764 ✭✭✭my3cents


    SouthernBelle wrote: »
    Anyone know if this is JK?
    Attachment not found.

    Bindweed, nothing like JK but still a pain to get rid of.


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    #34
    SouthernBelle
    Registered Users Posts: 1,042 ✭✭✭SouthernBelle


    pawdee wrote: »
    I'm pretty sure that's not Japanese Knotweed.
    Thanks.


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    #35
    SouthernBelle
    Registered Users Posts: 1,042 ✭✭✭SouthernBelle


    my3cents wrote: »
    Bindweed, nothing like JK but still a pain to get rid of.

    Thank you. I think I'd rather the pain of BW than JKW! :o


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    #36
    Roen
    Closed Accounts Posts: 4,620 ✭✭✭Roen


    https://www.pressreader.com/ireland/wexford-people/20170718/281663960060258

    Bit of light reading. Once developments start getting held up banks will sit up and take notice.


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    #37
    scotchy
    Registered Users Posts: 2,182 ✭✭✭scotchy


    is this JK? I got rid of a large clump of this stuff by injecting Roundup but have a few small pieces coming back.


    Thanks

    💙 💛 💙 💛 💙 💛



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    #38
    kylith
    Registered Users Posts: 17,736 ✭✭✭✭kylith


    scotchy wrote: »
    is this JK? I got rid of a large clump of this stuff by injecting Roundup but have a few small pieces coming back.


    Thanks

    I don't think it is. JK has alternating leaves, a zig-zag stem and white flowers.


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    #39
    looksee
    Registered Users Posts: 28,050 ✭✭✭✭looksee


    It looks like leycestaria or pheasant berry, can be very persistent but an attractive shrub unless you really don't want it :D


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    #40
    ems_12
    Registered Users Posts: 287 ✭✭ems_12


    SouthernBelle wrote: »
    Anyone know if this is JK?
    Attachment not found.
    No, it's not.  JK is best recognised by it's stem.  It has a 'zig-zag' pattern and is red/purple flecked in colour. http://www.nonnativespecies.org/index.cfm?sectionid=47


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    #41
    Gmm fan
    Registered Users Posts: 20 ✭Gmm fan


    Quick question. In the early stages of growth is Japanese knotweed known to spread outwards at ground level as opposed to immediately starting to shoot up vertically? Had something in the garden that had similar type of stem and similar leaves but not sure about the growth pattern. Thanks in advance. For any info.


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    #42
    my3cents
    Closed Accounts Posts: 9,764 ✭✭✭my3cents


    Gmm fan wrote: »
    Quick question. In the early stages of growth is Japanese knotweed known to spread outwards at ground level as opposed to immediately starting to shoot up vertically? Had something in the garden that had similar type of stem and similar leaves but not sure about the growth pattern. Thanks in advance. For any info.

    Nothing lateral about any of the growth its all straight up and reach for the sky. There is a sight but noticable zig zag up the stem from leaf node to leaf node.

    Any branching you see near the top of dead stems in the winter is where the plants have flowered.


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    #43
    Gmm fan
    Registered Users Posts: 20 ✭Gmm fan


    Thats great thanks for quick reply. Much appreciated.


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    #44
    Colm R
    Registered Users Posts: 997 ✭✭✭Colm R


    I don't think this is knotweed, but wouldn't mind a second opinion.

    Its leaves are alternating, but the its stem is quite weak all the way down i.e. its not supporting its own weight.

    I think it might be bindweed. Its down the road near a neighbor and I don't want to frighten him if I don't have to.


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    #45
    my3cents
    Closed Accounts Posts: 9,764 ✭✭✭my3cents


    Colm R wrote: »
    I don't think this is knotweed, but wouldn't mind a second opinion.

    Its leaves are alternating, but the its stem is quite weak all the way down i.e. its not supporting its own weight.

    I think it might be bindweed. Its down the road near a neighbor and I don't want to frighten him if I don't have to.

    100% bindweed.


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    #46
    Citizenpain
    Registered Users Posts: 1,908 ✭✭✭Citizenpain


    my3cents wrote: »
    100% bindweed.

    Yup ,, use bamboo sticks for it to wrap itself around and apply weedkiller


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    #47
    my3cents
    Closed Accounts Posts: 9,764 ✭✭✭my3cents


    Citizenpain wrote: »
    Yup ,, use bamboo sticks for it to wrap itself around and apply weedkiller

    Home made glyphosate gel made with wallpaper paste is also handy on bind weed as its putting a mass of growth in a plastic bag (obvious still attached to its roots) and adding some gyphosate mix and sealing the bag. Both methods and the cane method help keep the glyphosate off plants you don't want to kill.


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    #48
    my3cents
    Closed Accounts Posts: 9,764 ✭✭✭my3cents


    Just a reminder to anyone with Japanese Knotweed that now (3rd week in August) is a good time to spray.

    From past experience its easy to leave it too late and miss out on the most effective spray application of the year.

    I'm near the sea so have a smaller window that anyone inland and I know I have only got 4 weeks left before the JK starts dying down and its too late to spray.


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    #49
    evolving_doors
    Closed Accounts Posts: 11,812 ✭✭✭✭evolving_doors


    my3cents wrote: »
    Home made glyphosate gel made with wallpaper paste is also handy on bind weed as its putting a mass of growth in a plastic bag (obvious still attached to its roots) and adding some gyphosate mix and sealing the bag. Both methods and the cane method help keep the glyphosate off plants you don't want to kill.

    Why do you mix the glyphospate with wallpaper paste?


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    #50
    my3cents
    Closed Accounts Posts: 9,764 ✭✭✭my3cents


    Gebgbegb wrote: »
    Why do you mix the glyphospate with wallpaper paste?

    It sticks to the plant you want to kill and is less likely to spread to plants you want to keep. In the case of JK I have JK growing in rough grass (strimmed 3-4 times a year) the JK has been sprayed and sprayed and there are only little bits left. Because the grass is part of a river bank I don't want to kill off any areas of the grass and leave exposed soil that can erode when the river raises in winter storms

    So every month I paint the JK with my glyphosate and wallpaper paste mix. At worst if it rains I kill no more than a 80mm ring of grass which is much less than I'd kill if I was to spray.

    You can paint the "gel" with a paintbrush and it doesn't drip off the leaves.

    It takes a bit of effort and practice to get the right consistency of wall paper paste but I find it well worth the effort and lots cheaper than buying the official roundup gel with its applicator.


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    #51
    evolving_doors
    Closed Accounts Posts: 11,812 ✭✭✭✭evolving_doors


    I would imagine mixing with wallpaper paste would inhibit absorption and dilutes the glyphosphate.
    What's wrong with just painting it on?


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    #52
    my3cents
    Closed Accounts Posts: 9,764 ✭✭✭my3cents


    Gebgbegb wrote: »
    I would imagine mixing with wallpaper paste would inhibit absorption and dilutes the glyphosphate.
    What's wrong with just painting it on?

    It drips off. Because the gel sits on the leaf for a while the plant absorbs more of it so you don't have to paint as many leaves. You can make the dilution anything you want and if you wanted can mix the wall paper paste into neat glyphosate but that would be overkill.

    If it wasn't a good idea then why would Monsanto make their own Roundup applicator for dispensing a gel mix of Roundup? https://www.amazon.co.uk/Roundup-Gel-Spot-Treatment-Weedkiller/dp/B005ZALTF0 .


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    #53
    pawdee
    Registered Users Posts: 549 ✭✭✭pawdee


    My partner and I started our eradication programme a few weeks ago. We were quoted 4500 euros by a specialist last year so that's why we're tackling it ourselves. We looked up various methods and opted for stem injection. The proprietary injection tools cost an arm and a leg so off we went to the local farm supplies shop and bought two syringes (2 euros each) and some Roundup Biactive (37 euros for 5 litres I think). Our method is as follows:

    Step 1)

    I go ahead and drill* holes in each stem.

    Step 2)

    My partner follows closely behind me and she injects the living s**t out of each stem with a 1:1 mix of Roundup / Water

    That's it!

    Already we're seeing the leaves turn yellow, then brown and then drop off. We'll know how successful our approach has been next spring. I'll report back next year.

    *I started off puncturing each stem with a screwdriver but find a battery drill with a wood bit much easier and quicker.


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    #54
    my3cents
    Closed Accounts Posts: 9,764 ✭✭✭my3cents


    This is about the cheapest injection tool you'll find https://www.amazon.co.uk/jk-injector-japanese-knotweed/dp/B00WTC7MDK/ same guy also sells on ebay.


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    #55
    pawdee
    Registered Users Posts: 549 ✭✭✭pawdee


    my3cents wrote: »
    This is about the cheapest injection tool you'll find https://www.amazon.co.uk/jk-injector-japanese-knotweed/dp/B00WTC7MDK/ same guy also sells on ebay.

    Thanks for the link. It would be good not to have to keep re-filling the syringe from a jar so we'll probably buy one of those! It would speed things up enormously. This is really just a trial so fingers crossed.


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    #56
    my3cents
    Closed Accounts Posts: 9,764 ✭✭✭my3cents


    pawdee wrote: »
    Thanks for the link. It would be good not to have to keep re-filling the syringe from a jar so we'll probably buy one of those! It would speed things up enormously. This is really just a trial so fingers crossed.

    I only use it on isolated clumps but found this quite handy https://www.amazon.co.uk/KitchenCraft-Cooking-Syringe-Meat-Injector/dp/B0018BGKUE and very cheap. Its hard to get the same amount in each stem but you can do between 5 and 10 stems on one fill.

    I still use a bit of wire fitted into a wooden handle to make a hole through each stem first.


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    #57
    pawdee
    Registered Users Posts: 549 ✭✭✭pawdee


    I've seen some horses**t written about JK but this (from a recent article in a national paper) takes the biscuit:

    "In some instances it costs more to get rid of than the house is worth, giving the property a negative value," he explains. "When the roots go in under the concrete, that's where the difficulty lies. You could have a house worth €350,000 and it might cost €400,000 to sort it. From our perspective, that makes it beyond a write-off."


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    #58
    Shrubsandsudz
    Registered Users Posts: 15 ✭Shrubsandsudz


    Chefs are seemily going mad over the flowers. Got this all over, propagates like mad......It's the first thing my pig will go to on a new patch. Big bitch eats better than the humans do IMHO xD.


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    #59
    Shrubsandsudz
    Registered Users Posts: 15 ✭Shrubsandsudz


    As a side note, if you contact the local council (this is heresay) they are obligated to spray it. I wont do that here unless it gets "that bad" because we've spent our seven years without any chemical spay on the land and want to keep it that way. Test it out and let me know what they come back with.


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    #60
    Howzit17
    Registered Users Posts: 62 ✭✭Howzit17


    Any point in spraying this time of year?


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    #61
    my3cents
    Closed Accounts Posts: 9,764 ✭✭✭my3cents


    Howzit17 wrote: »
    Any point in spraying this time of year?

    Bit late, I doubt there are any green leaves left. Best plan would be to wait till the stems have gone brown then cut them down. Next year keep an eye on it and wait till the plant is about 2-3ft high in late April early May (timings may vary and beware it can go from 3ft to 6ft in a couple of days) then spray it to keep it down. Follow up with another dose as soon as you get dry weather any time from the last week in August onwards.


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