Photo of common cinquefoil plants with flowers

    Common Cinquefoil

    Potentilla simplex
    Photo of a giant ragweed plant.

    Giant Ragweed

    Ambrosia trifida
    Photo of the upper portions of two Jerusalem artichoke plants.

    Jerusalem Artichoke (Sunflower Artichoke)

    Helianthus tuberosus
    fork and knife icon

    Edible

    Photo of leaf cup flower

    Pale-Flowered Leaf Cup

    Polymnia canadensis
    Photo of starry rosinweed flowerheads on a black background

    Starry Rosinweed

    Silphium asteriscus
    Photo of many blooming ashy sunflower plants, showing gray-green leaves.

    Sunflowers

    Helianthus spp.
    Photo of water milfoil plants along the shore of a pond

    Water Milfoils

    Myriophyllum spp.
    Photo of yellow crownbeard flowerhead.

    Yellow Crownbeard

    Verbesina helianthoides