Unknown plant - northern Indiana

Discussion in 'Plants: Identification' started by huffmun, Sep 13, 2003.

  1. huffmun

    huffmun Member

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    Location:
    Munster, IN USA
    I am trying to identify several plants I found along a new bike path in northern Indiana.
    The first one is a very large herbaceous plant, about 15 feet tall. It is blooming now in mid September with showy sprays of small off-white flowers. I will try to attach two photos.
     

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  2. mudknee

    mudknee Member

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    Location:
    Vancouver BC
    PLANT ID- Bike Path

    Hi,
    Just in case you haven't ID'd this plant yet...it is an oxydendron arboreum....
    I have included a link to a site with more info about it...hope this helps...

    http://oregonstate.edu/dept/ldplants/oxar.htm

    ps/ this site is great for ALL plants
     
  3. huffmun

    huffmun Member

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    Munster, IN USA
    I don't think oxydendron arboreum is correct. First, it is not a tree. Second the leaves come to a point whereas oxydendron arboreum have rounded ends.

    Thanks for the link.
     
  4. Daniel Mosquin

    Daniel Mosquin Paragon of Plants UBC Botanical Garden Forums Administrator Forums Moderator 10 Years

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    Hello,

    This appears to be Fallopia japonica aka Polygonum cuspidatum commonly known as "Japanese knotweed".

    It is a noxious weed throughout much of North America, and very difficult to eradicate. It's discussed in this thread:

    Eradicating Japanese knotweed

    An excellent resource site:

    The Bugwood Network - from the University of Georgia
     
    Last edited: Apr 17, 2004
  5. huffmun

    huffmun Member

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    Location:
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    Indeed, you have found it. "Japanese knotweed" is correct.
    Thanks very much.
     

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