Photo of ashy sunflowers showing flowers, leaves, and stems.

    Ashy Sunflower

    Helianthus mollis
    Photo of tall thoroughwort plant with flowers

    Common Boneset (Thoroughwort)

    Eupatorium perfoliatum
    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 mist flower or wild ageratum plants with flowers

    Mist Flower (Wild Ageratum; Blue Boneset)

    Conoclinium coelestinum (formerly Eupatorium coelestinum)
    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 a tall thoroughwort plant in bloom.
    Photo of cut-leaved teasel showing flowerhead and joined, cuplike leaves.

    Teasels

    Dipsacus fullonum and D. laciniatus
    invasive icon

    Invasive

    Photo of white snakeroot leaves and flowers

    White Snakeroot

    Ageratina altissima (formerly Eupatorium rugosum)
    Poisonous Icon

    Poisonous

    Photo of wholeleaf rosinweed flowerhead

    Wholeleaf Rosinweed

    Silphium integrifolium
    Photo of yellow crownbeard flowerhead.

    Yellow Crownbeard

    Verbesina helianthoides