Photo of bushy clump of brown-eyed Susan plants.

    Brown-Eyed Susan

    Rudbeckia triloba
    Photo of Carolina false dandelion flowerhead.

    Carolina False Dandelion

    Pyrrhopappus carolinianus
    fork and knife icon

    Edible

    Photo of common sunflower

    Common Sunflower

    Helianthus annuus
    fork and knife icon

    Edible

    Photo of elephant's foot closeup of flowers

    Elephant's Foot

    Elephantopus carolinianus
    Photo of a giant ragweed plant.

    Giant Ragweed

    Ambrosia trifida
    Photo of two golden aster flowerheads plus a few leaves.

    Golden Aster (Camphorweed)

    Heterotheca camporum (syn. Chrysopsis villosa var. camporum)
    Photo of tall goldenrod plant with flowers

    Goldenrods

    Solidago spp. (23 species in Missouri)
    Photo of horseweed flowers

    Horseweed (Canada Fleabane, Hog Weed)

    Conyza canadensis (formerly Erigeron canadensis)
    Photo of mist flower or wild ageratum plants with flowers

    Mist Flower (Wild Ageratum; Blue Boneset)

    Conoclinium coelestinum (formerly Eupatorium coelestinum)
    Photo of New England aster plants with flowers

    New England Aster

    Symphyotrichum novae-angliae (formerly Aster novae-angliae)
    Closeup of single flowerhead of a New World aster with yellow disk florets and lavender ray florets

    New World Asters (American Asters)

    Symphyotrichum spp. (formerly Aster spp.)
    Photo of pale Indian plantain flower clusters.

    Pale Indian Plantain

    Arnoglossum atriplicifolium (also Cacalia atriplicifolia)
    No photo available

    Philadelphia Fleabane

    Erigeron philadelphicus
    Photo of sawtooth sunflower flowerhead.

    Sawtooth Sunflower

    Helianthus grosseserratus
    Photo of many blooming ashy sunflower plants, showing gray-green leaves.

    Sunflowers

    Helianthus spp.
    Photo of a tall thoroughwort plant in bloom.
    Photo of white crownbeard plant with flowers

    White Crownbeard

    Verbesina virginica
    Photo of white heath aster flowers

    White Heath Aster

    Symphyotrichum pilosum (formerly Aster pilosus)
    Photo of white snakeroot leaves and flowers

    White Snakeroot

    Ageratina altissima (formerly Eupatorium rugosum)
    Poisonous Icon

    Poisonous