Photo of Chinese yam showing leaves and bulbils

    Chinese Yam

    Dioscorea oppositifolia (sometimes called D. batatas)
    invasive icon

    Invasive

    Photo of a giant ragweed plant.

    Giant Ragweed

    Ambrosia trifida
    Photo of green dragon plant showing flower and leaves.

    Green Dragon

    Arisaema dracontium
    Poisonous Icon

    Poisonous

    Photo of Japanese knotweed

    Japanese Knotweed

    Fallopia japonica
    invasive icon

    Invasive