Invasive weed

Discussion in 'Pesticide & Herbicide Application' started by RigglePLC, Jun 11, 2018.

  1. RigglePLC

    RigglePLC LawnSite Fanatic
    Messages: 15,356

    There is a big weed a couple blocks from me beside a creek. I thought it might be the invasive and dangerous weed, giant hogweed.
    When I sent a picture to the Michigan state invasive species people, they said it was not. They suggested it was probably poison sumac.
    But it does not look like the online pictures of poison sumac.
    Pictures look somewhat similar to poison hemlock.
    Experienced guys: what is your opinion?



  2. sprayboy

    sprayboy LawnSite Senior Member
    from Indiana
    Messages: 999

    Looks like Hemlock to me. It is everywhere in our area. Some roadside ditches are full of it.

    CHARLES CUE LawnSite Silver Member
    Messages: 2,789

    not sumac I have seen them the stem is hollow and cut very easy but no name
  4. BigJlittleC

    BigJlittleC LawnSite Platinum Member
    from Chicago
    Messages: 4,069

    Looks like Hemlock to me too.
  5. Trees Too

    Trees Too LawnSite Platinum Member
    Messages: 4,915

    Poison Hemlock: Conium maculatum

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