Photo of Johnson grass flower clusters

    Johnson Grass

    Sorghum halepense
    invasive icon

    Invasive

    Photo of whorled milkweed flowers.

    Milkweeds

    Subfamily Asclepiadoideae
    Photo of wake robin, or trillium, plant with leaves and flower

    Wake Robin (Trillium)

    Trillium sessile
    Photo of white dogtooth violet colony

    White Dogtooth Violet

    Erythronium albidum