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Japanese bamboo knotweed

Japanese bamboo knotweed - Botany Forum

Japanese bamboo knotweed - Botany Forum


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  #1  
Old 07-06-2004, 09:26 PM
Tim923
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Default Japanese bamboo knotweed



This weed grows like crazy in upstate NY in Binghamton. Just how
widespread is this weed?

In our area, we call it Japanese Bamboo, our more commonly just
bamboo. It's so hard to get rid of it. It grows right back after
pulling or flattening. Did this plant overpopulate in Japan?
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  #2  
Old 07-07-2004, 12:34 AM
Tim923
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Default Japanese bamboo knotweed

I took some neat pics of this weed.

http://mysite.verizon.net/vze8adrh/weed1.jpg
A big piece of property wasted to knotweed.

http://mysite.verizon.net/vze8adrh/weed2.jpg
This neighbor put up a fence.

http://mysite.verizon.net/vze8adrh/weed3.jpg
Even after a mow, this pesky stuff grows back.
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  #3  
Old 07-11-2004, 02:00 AM
Robespierre II
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Default Japanese bamboo knotweed


"Tim923" wrote in message


Why do you call it bamboo?
From your pictures I don't think it looks like bamboo at all.
Some dwarf bamboo varieties are invasive but they do not look remotely like
your stuff.
Do you know the scientific name thereof?


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  #4  
Old 07-11-2004, 08:30 PM
Leo Michels
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Default Japanese bamboo knotweed

"Robespierre II" <somebody@somewhere> meinte:

Fallopia japonica or Reynoutria japonica

A very fast spreading weed in central Europe too.
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  #5  
Old 07-12-2004, 03:35 PM
Antonio Van Diemen
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Default Japanese bamboo knotweed


"Leo Michels" <[Only registered users see links. ]> wrote

OK, thanks, as if we did not have enough to worry about.

Here in the Middle Hudson Valley, NY, it's the Chinese Bitter (a vine), the
Ailanthus (a tree), the Purple Loosestrife (a flower), the Woolly Adelgid
(an insect which kills hemlock trees) etc.


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  #6  
Old 07-12-2004, 05:44 PM
Mike Griggs
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Default Japanese bamboo knotweed


Actually it is a very good honey bee plant the honey most closely taste
like buckwheat honey which is more difficult to come by in recent years.

The nomenclature of the name is in question though you are correct in
leaning toward Fallopia japonica here in the US it is very commonly
called Polygonum cuspidatum when not referred to by colloquial names
such as Bamboo, false bamboo, or Japanese Knotweed

Its been in upstate NY for many years as I remember stumbling on a patch
in the late 60's

Mike

"Antonio Van Diemen" <someone@anywhere> wrote:

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  #7  
Old 07-13-2004, 12:17 AM
David Hershey
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Default Japanese bamboo knotweed

The USDA Plants Database lists it as occurring in all but 9 of the
continental states. It uses the name Polygonum cuspidatum.

[Only registered users see links. ]


Mike Griggs <[Only registered users see links. ]> wrote in message news:<[Only registered users see links. ].cornell.edu>.. .
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  #8  
Old 07-13-2004, 02:39 AM
Antonio Van Diemen
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Default Japanese bamboo knotweed


"Antonio Van Diemen" <someone@anywhere> wrote


Oops actually I meant Oriental Bittersweet = Celastrus Orbiculata.

Nothing sweet about it AFAIC.


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  #9  
Old 07-13-2004, 06:53 PM
Leo Michels
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Default Japanese bamboo knotweed

[Only registered users see links. ] (David Hershey) meinte:


Here's the list of synonyms from this site:

Polygonum cuspidatum Sieb. & Zucc.
Fallopia japonica (Houtt.) Dcne.
Pleuropterus cuspidatus (Sieb. & Zucc.) Moldenke
Pleuropterus zuccarinii (Small) Small
Polygonum cuspidatum Sieb. & Zucc. var. compactum (Hook f.) Bailey
Polygonum zuccarinii Small
Reynoutria japonica Houtt.

Simple and clear thing, a scientific name, isn't it?

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  #10  
Old 07-13-2004, 07:36 PM
Mike Griggs
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Default Japanese bamboo knotweed

The history of this plants nomenclature is very interesting. During the
years of discovery when it was far more difficult to distribute
findings, information and meet to assign new names, multiple names were
assigned. The return to historic records, genetic tests can show a very
different picture of who was first or which assigned name is in standing
with the conventions of the time.

It does appear that Fallopia japonica is being proposed as the "new"
right name which should emerge should group consensus agree.

Scientific names change! Its a fact of science!

Mike

In article <[Only registered users see links. ]>,
Leo Michels <[Only registered users see links. ]> wrote:

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