Photo of Jack-in-the-pulpit plant showing foliage and flowering structure

    Jack-in-the-Pulpit

    Arisaema triphyllum
    Poisonous Icon

    Poisonous

    Photo of purple meadow parsnip foliage and flowers

    Meadow Parsnip

    Thaspium trifoliatum
    Photo of water milfoil plants along the shore of a pond

    Water Milfoils

    Myriophyllum spp.