Japanese Knotweed

Discussion in 'Plants: Identification' started by eloharein, Aug 29, 2021.

  1. eloharein

    eloharein Active Member

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    This weed has been growing in my neighbors yard and this summer it grew to over six feet tall. It is right beside his garage, but the flowers are now nodding over my fence. It has a bamboo like stem and drooping pannicles. Is this the dreaded Japanese knotweed?
     

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  2. togata57

    togata57 Generous Contributor 10 Years

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  3. wcutler

    wcutler Paragon of Plants Forums Moderator VCBF Cherry Scout 10 Years

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  4. eloharein

    eloharein Active Member

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    Georgia Strait likes this.
  5. Michael F

    Michael F Paragon of Plants Forums Moderator 10 Years

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    Definitely a Phytolacca, but the ribbed berries look more like P. acinosa (an invasive species from eastern Asia) than P. americana (in BC, also an invasive non-native species, from eastern N America). Not 100% sure though; if the berries remain ribbed to maturity, then it is P. acinosa; berries of P. americana can be slightly ribbed when immature but become smooth at maturity.
     

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