Illustration of northern catalpa leaves, flowers, fruit.

    Northern Catalpa

    Catalpa speciosa
    Illustration of Osage orange flowers and fruit.

    Osage Orange

    Maclura pomifera
    Illustration of poison ivy leaves, flowers, fruits.

    Poison Ivy

    Toxicodendron radicans
    Poisonous Icon

    Poisonous

    Illustration of tree-of-heaven leaves, flowers, fruit

    Tree-of-Heaven

    Ailanthus altissima
    invasive icon

    Invasive