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Dave Beedon | all galleries >> Places >> Washington State >> Renton (My Home Town) >> Renton: Miscellaneous > Japanese knotweed (Polygonum cuspidatum)
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Japanese knotweed (Polygonum cuspidatum)
02-DEC-2006 Dave Beedon

Japanese knotweed (Polygonum cuspidatum)

Renton, Washington

In response to Steve's question I did some research, which yielded the name and details of the plant.
The orange "leaves" are seedpods from last year's growth. It is an invasive plant in this area.

This plant was identified for me through the generous help of Rebecca Alexander of the
Elizabeth C. Miller Library ( http://depts.washington.edu/hortlib/index.shtml ) of
the University of Washington's Botanical Gardens ( http://depts.washington.edu/urbhort/ ).

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Nikon D80 ,Nikkor 28-105mm f/3.5-4.5D AF
1/200s f/4.5 at 105.0mm iso800 full exif

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dan dunn17-May-2007 08:49
it's pervasive-which I think is a contraction of "perverted" and "invasive"
Dave Beedon21-Apr-2007 19:20
Dan, is it invasive?
dan dunn21-Apr-2007 11:01
we have a different sort of knotweed on the Pandamonium Dave....
Steve Ainsworth18-Apr-2007 11:59
Dave, what's the plant with the red leaves? Inquiring minds want to know.
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