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Old 25-07-2009, 02:04 PM posted to uk.rec.gardening
Judith in France Judith in France is offline
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Default Japanese Knotweed - piece on BBC Breakfast news 23rd July 2009

On Jul 25, 11:45*am, Martin wrote:
On Sat, 25 Jul 2009 03:28:14 -0700 (PDT), Judith in France



wrote:
On Jul 24, 10:19*pm, Martin wrote:
On Fri, 24 Jul 2009 14:17:43 -0700 (PDT), Judith in France


wrote:
On Jul 24, 9:25*pm, Martin wrote:
On Fri, 24 Jul 2009 21:00:45 +0100, hugh ] wrote:
In message , Gordon H
writes
In message , Stewart Robert Hinsley
writes
In message , Gordon H
writes


Do these bugs kill the roots of Knotweed, which seem to creep
underground and pop up close by? * * * *At least that is my
perception, BICBW. * * * The warden has to apply for a licence each
year to treat the Knotweed, but it reappears each year in an area
between a pool and the river, and surrounded by Balsam, which has to
be removed first or the Knotweed is hidden. * * *It is a losing battle...


If I understand correctly they eat the stems. If the bugs are
sufficiently effective, this will result in the weakening of the root
system. Over a few years this will lead to the eradication of the
clump. (It's like frequent mowing will control Japanese knotweed..)


Thanks. * *Mowing isn't an option in the particular area, I don't think.
Some of us would like to try scythes on the balsam below the bottom
"knuckle", to at least chop them down and give other growth a chance,
but I think Health & Safety aspects would rule that out. * * *;-)
Why should elf n safety stop you using a recognised garden implement.