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Robert V View Drop Down
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    Posted: 01 Sep 2011 at 11:40pm
Hi guys,
 
no doubt at some time you have all heard a whisper about Japanese Knot Weed and either wondered what all the fuss was about or wondered if it really is 'that' bad.
 
Well, just so that you know: JKW can grow through solid concrete, tarmacadam (as shown here), brickwork, anything. If you try to sell your house and the surveyor picks up on it, your house will be registered on an insurance data base and until it is completely eradicated from the property you won't be able to sell it - worse- you can't even get a re mortgage!!!!
 
Eradication you ask - Mmmm, most companies will only accept liability for a 98% eradication probability. It takes three "growing seasons" before eradication can be confirmed, during which time the "controlled substance" needs to be hessian fenced and not disturbed.
 
So yes, it really is that bad. If any of you guys see JKW out in the wilds, please contact the environment agency straight away. Anyone who's been to Tintagel in the last couple of years will know the problems Devon and Cornwall district have been having with this nasty.
 
RobV
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Robert V View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Robert V Quote  Post ReplyReply Direct Link To This Post Posted: 01 Sep 2011 at 11:42pm
germination in solid tarmacadam only a year old!
 
 
RobV
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Caleb View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Caleb Quote  Post ReplyReply Direct Link To This Post Posted: 02 Sep 2011 at 10:28am
Originally posted by Robert V Robert V wrote:


until it is completely eradicated from the property you won't be able to sell it - worse- you can't even get a re mortgage!!!!


My sister has just bought a house with a small amount of knotweed in the garden- she was refused a mortgage at first, and had to get one with a specialist. The seller is paying for the removal, including a repeat treatment in six months time.

Hopefully the psyllid trials will be successful...
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tim hamlett View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tim hamlett Quote  Post ReplyReply Direct Link To This Post Posted: 02 Sep 2011 at 12:53pm
hi

i had it in my garden when i bought the house in 2001. i didn't realise until i'd done some landscaping and planting so didn't want to treat it with chemicals. i chose to dig the plants out and burn them then monitor for new shoots, pulling them out as soon as i saw them. this contained the spread well but ten years later i still have a couple of persistent shoots. this is manageable and not much of a pain for someone who regularly weeds their garden anyway although i remain hopeful that eventually they'll give up!

to be honest though, from a purely gardening perspective, i find couch grass much more of a pain.

tim

ps thanks for the reminder...hadn't checked on them for a while so just pulled two up...again!!!


Edited by tim hamlett - 02 Sep 2011 at 12:59pm
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Liz Heard View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Liz Heard Quote  Post ReplyReply Direct Link To This Post Posted: 02 Sep 2011 at 6:27pm
in my area at least, these (now common) invasive alien flora all established themselves around the same time (late 80s);
Jap Knot Weed
Evening Primrose
Giant Hogweed
Indian Balsam

like it or knot, they seem here to stay!

ben
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kit View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kit Quote  Post ReplyReply Direct Link To This Post Posted: 02 Sep 2011 at 8:12pm
well i found some on my local cycle path and was cutting some stems of it to do some whitling and got some of the juice from it on my skin wich reakted like an acid and gave me a nast burn
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kit View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kit Quote  Post ReplyReply Direct Link To This Post Posted: 02 Sep 2011 at 8:12pm
oh it turned out it was hog weed
kit
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