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How to kill japanese knotweed


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tagwex
Rank attained: Chlorophyll for blood


Joined: 23 Feb 2010
Posts: 4739
Location: Co. Wexford

PostPosted: Mon Jun 09, 2014 10:21 pm    Post subject: Reply with quote

kindredspirit wrote:
Wexford? Where's that then?


You know dam well where it is, sure don't we have to send van loads of our strawberries and new potatoes across the country to feed the masses, follow one of them home and you will find out where it is soon enough.

kindredspirit wrote:
the infamous Wexford Willow!


The 'Wexford Willow' is no more, glyphosphated into the next world, took me four days to spray that lot and still it is coming up. Have made a start on cutting down said Willows too so it wont be a problem again.

kindredspirit wrote:
has anyone noticed the number of Speed Camera Vans when going through Co. Wexford.


Ha ha, very droll. That judge didn't know what hit him that day, I had three ways to get out of that predicament, hit him with the best one first - case struck out immediately. Waste of a day that is all that was. Anyway KS it was Wicklow that I was caught in, not Wexford.

kindredspirit wrote:
Courtown is the only seaside place on this island, which has virtually no tide


Methinks you are slipping something extra into your carbonated water. I don't know for sure but it sounds highly unlikely. You may be mixing it up with Wexford harbour which is indeed tidal but notoriously difficult to work out tide times and reaches due to geographical reasons. There are no published tide times for WH but the local knowledge is to use the Admiralty charts for some bay in Wales (cannot remember the name) but it gives a very good approximation for what will happen in Wexford.

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tagwex
Rank attained: Chlorophyll for blood


Joined: 23 Feb 2010
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Location: Co. Wexford

PostPosted: Mon Jun 09, 2014 10:22 pm    Post subject: Reply with quote

PS. Talk about going off topic......
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Its my field. Its my child. I nursed it. I nourished it. I saw to its every want. I dug the rocks out of it with my bare hands and I made a living thing of it!

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kindredspirit
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PostPosted: Tue Jun 10, 2014 6:02 am    Post subject: Reply with quote

Hi T,

The comment about the speed vans was nothing to do with you but because, everytime I've driven to and from the ferry in Rosslare, the road has been infested with those vans. As you've done so well with the willows can you give those vans a spray or two while you're at it! Smile Smile Smile

And as for Courtown, I said virtually no tide, not no tide. It has a tide but apparently it has the smallest tidal range in the country. Something to do with the tides in the Irish sea when coming around the country from the Atlantic meeting at that point and so negating each other out. I'll have to dig out an almanac and see.

This is all to do with gardening of course. Smile Smile Smile

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tagwex
Rank attained: Chlorophyll for blood


Joined: 23 Feb 2010
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Location: Co. Wexford

PostPosted: Tue Jun 10, 2014 7:43 am    Post subject: Reply with quote

Ohhhh I see, misunderstood you. I had mentioned in a post a few weeks back that I was up in court for speeding and presumed you were giving me a dig about it.
We burn those speed vans around here contents and all.
As for gardening related matters, you mentioned spray and I mentioned dig so we are good to go!

_________________
Its my field. Its my child. I nursed it. I nourished it. I saw to its every want. I dug the rocks out of it with my bare hands and I made a living thing of it!

This boy can really sing http://youtu.be/Dgv78D2duBE
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Good guy
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Joined: 11 Feb 2013
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Location: Donegal

PostPosted: Tue Jun 10, 2014 11:32 am    Post subject: Reply with quote

Roundstone: beautiful place. My parents and sisters used to camp at nearby Dog's Bay back in the late 60s/early 70s, but I'd left home by then. They loved it. I spent a lovely week in a cottage on
Roundstone bog about twenty years ago.
I remember there was an interesting garden centre to the north of the village (or was that Clifden?) they specialised in plants for seaside gardens . Anyway, they had a plant I think was Carpobrotus edulis, Hottentot Fig, now regarded as an alien pest, like JKW, lovely provided it doesn't escape into the outside world.
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kindredspirit
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PostPosted: Sun Jun 15, 2014 6:58 pm    Post subject: Reply with quote

kindredspirit wrote:
Hi T,

And as for Courtown, I said virtually no tide, not no tide. It has a tide but apparently it has the smallest tidal range in the country. Something to do with the tides in the Irish sea when coming around the country from the Atlantic meeting at that point and so negating each other out. I'll have to dig out an almanac and see.

This is all to do with gardening of course. Smile Smile Smile


From the MacMillan Reeds Nautical Almanac.

Special note in almanac that Courtown has the lowest tidal range. On Springs it's 2.8 metres and Neaps 1.9.

(Might be useful info if you're gardening seaweed. Smile Smile

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Good guy
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Location: Donegal

PostPosted: Wed Jun 18, 2014 1:46 pm    Post subject: Reply with quote

Back to the topic once more:
This months 'The Garden' RHS magazine has an article 'Control options for Japanese Knotweed'. They recommend glyphosate, as above, applied when it is about 1m high, or into the cut stems, several applications being required.
Search also under RHS Japanese knotweed, or cabi.org, or tinyurl.com/omsvuxl
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tagwex
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Location: Co. Wexford

PostPosted: Wed Jun 18, 2014 11:11 pm    Post subject: Reply with quote

I read elsewhere, that the glyphosate should be injected into the stems with a syringe.
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This boy can really sing http://youtu.be/Dgv78D2duBE
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PostPosted: Thu Jun 19, 2014 9:44 pm    Post subject: Reply with quote

Yes, and one site suggested 'disrupting' the stem tissue with a screwdriver before applying the weed killer, which, they said, should be one of the tougher kinds such as brushwood killer.
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James Kilkelly
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Joined: 30 May 2006
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PostPosted: Sat Sep 27, 2014 6:06 pm    Post subject: Reply with quote

Want a reduction on your property tax bill?
Then grow a blast of Japanese knotweed...... ah, no , not really.

Quote:
Elizabeth Abraham could lose up to 35,000 on her property because her garden has been infested by Japanese knotweed
An elderly woman's home has almost halved in value because of an invasion of Japanese knotweed.

Elizabeth Abraham's house in Swansea should be worth up to 80,000, but the infestation of the plant has left it valued at just 45,000.




More here....... http://www.irishmirror.ie/news/weird-news/value-house-halves-after-massive-4328111

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tagwex
Rank attained: Chlorophyll for blood


Joined: 23 Feb 2010
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Location: Co. Wexford

PostPosted: Sat Sep 27, 2014 8:09 pm    Post subject: Reply with quote

Yep. I have lived in the UK for many a year working in a surveyors office and property prices can be severely depleted due to that weed. Not so sure that it has the same affect here though.
_________________
Its my field. Its my child. I nursed it. I nourished it. I saw to its every want. I dug the rocks out of it with my bare hands and I made a living thing of it!

This boy can really sing http://youtu.be/Dgv78D2duBE


Last edited by tagwex on Sun Sep 28, 2014 9:21 am; edited 1 time in total
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tagwex
Rank attained: Chlorophyll for blood


Joined: 23 Feb 2010
Posts: 4739
Location: Co. Wexford

PostPosted: Fri Sep 18, 2015 6:18 pm    Post subject: Reply with quote

I was talking with a professional today, expert in knotweed removal who has been called into the building site that I am working on to eradicate the three areas of the dreaded weed. His solution is to cut it down to approx. 150mm and then inject each stem with Roundup gold 450.
_________________
Its my field. Its my child. I nursed it. I nourished it. I saw to its every want. I dug the rocks out of it with my bare hands and I made a living thing of it!

This boy can really sing http://youtu.be/Dgv78D2duBE
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Good guy
Rank attained: Chlorophyll for blood


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Posts: 2572
Location: Donegal

PostPosted: Fri Sep 18, 2015 11:00 pm    Post subject: Reply with quote

Probably a time when there really isn't an alternative to glyphosate. At least with that method the weed killer won't be spread everywhere. But I'm still not sure I trust the manufacturer's claims that it decomposes harmlessly. Who has researched that?
Who paid for the research?
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tagwex
Rank attained: Chlorophyll for blood


Joined: 23 Feb 2010
Posts: 4739
Location: Co. Wexford

PostPosted: Sat Sep 19, 2015 9:35 am    Post subject: Reply with quote

Haven't a clue, but that is what our resident expert is doing. Once it has died back it will be dug up, soil and all to a distance of 5m from the stems, and wrapped in a membrane and transported off site to some specialised tip.
_________________
Its my field. Its my child. I nursed it. I nourished it. I saw to its every want. I dug the rocks out of it with my bare hands and I made a living thing of it!

This boy can really sing http://youtu.be/Dgv78D2duBE
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