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Posted By chris allen
There are lots of detail regarding the control and management of japanese knotweed, but little information on any health effects when coming in to contact with this plant. Has any one had experience in controlling this plant and providing adequate protection for employees eg ppe requirements.
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Posted By Andrew M
Chris.
I'm confused,
If we're talking about the same Japanese Knotweed then as far as i was aware the only hazard it posed was it attracts bees and displaces other plants.
Other than that it's edible and tastes a bit like rhubarb. Can get a little tough later on in the season though.
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Posted By garyh
Are you thinking about giant hogweed, which causes skin burns especially in contact with sunlight if you handle the stems / sap etc?
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Posted By Jonathan Breeze Chris, Wikipedia may be a good place to start: http://en.wikipedia.org/wiki/Japanese_knotweedIt states that young shoots can be boiled and eaten as well as the stems being used as pea shooters and the roots being used in Chinese medicine. Assuming this info is correct, then that would suggest there are few adverse health effects. It would also correspond with my own childhood experience of playing in "the jungle" which was a bit of wasteland near where I lived. 25 years on I can attest to no adverse health effects caused by Knotweed exposure yet. Don't however get confused with Giant Hogweed though, which is a nasty related to Hemlock (the poison used to execute Socrates).
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Posted By Jonathan Breeze
Looks like Gary & Andrew already covered my points.
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Posted By Tabs
Considering *anyone* can edit or add to Wikipedia, I would caution all persons against taking advice from it regarding the safety of eating plants you are unfamiliar with - please double-check with a reputable source.
Wikipedia is great fun, but can be a little streched on facts at times :-)
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Posted By Jonathan Breeze
Agree Tabs, that is why I used the phrases "good place to start" and "assuming this info is correct".
I would never recommend Wikipedia as a sole source of information on a controversial or political subject.
That said, as far as I know - Japanese Knotweed is not standing as a candidate in the US elections... though it has invaded a few countries, so there is a possibility that satirical links may have been added.
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Posted By Tabs
;-) nice one
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Posted By Tony Brunskill
Chris,
I have a client who are specialist in the control of Japanese Knotweed. I do not think it presents any significant risks to health but there are issues about it from both an environmental and landscaping viewpoint. Their speciality is removing it. Contact me if you require further details.
Regards
Tony Brunskill
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Posted By Brett Day
NetRegs has info on Japenese Knotweed - on bothe the safety and environmental aspects regarding it.
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Posted By Dave Wilson
You may be getting mixed up with hogweed which does cause health problems but Jap Knotweed is not harmful to humans or animals.
sent you some info
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Posted By Jean
In Jeffrey Archer's new book, A Prisoner of Birth. He planted Japanese Knotweed on a potential building site. Apparently, it has been known to destroy buildings, and the only effective way to remove it is through fire.
Thats all.
Jean
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Posted By Smiff
The fire thing is not correct.
The plant itself is harmless, but it may be sprayed with herbicide.
Near watercourses Roundup is used, less sensitive locations the like of Broadsword can be used to treat it.
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Posted By Jean
I'm going to have to write to Jeffrey Archer for clarification.
Jean
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Posted By Smiff
When you do you could point out to Jeffery that fire would be about the least effective measure, since it regrows from an extensine undergroung rhizome; a very difficlut thing to burn
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Posted By P.R
Hi all,
as far as I am aware, the main problems are environmental as it takes over areas and is nigh on impossible to erradicate.
if you tread on broken shoots and the walk on greenfield areas, it will "take hold".
Regards
Pete
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