Photo of leaf cup flower

    Pale-Flowered Leaf Cup

    Polymnia canadensis
    Photo of a prairie dock flowerhead

    Prairie Dock (Prairie Rosinweed)

    Silphium terebinthinaceum
    Purple Coneflower

    Purple Coneflower

    Echinacea purpurea
    Photo of purple-headed sneezeweed flowerhead showing round, purplish disk.

    Purple-Headed Sneezeweed

    Helenium flexuosum
    Photo of rose verbena, or rose vervain, flower cluster showing leaves

    Rose Verbena (Rose Vervain)

    Glandularia canadensis (formerly Verbena canadensis)
    Photo of sawtooth sunflower flowerhead.

    Sawtooth Sunflower

    Helianthus grosseserratus
    Photo of shepherd’s purse plant and flowers

    Shepherd's Purse

    Capsella bursa-pastoris
    fork and knife icon

    Edible

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

    Sunflowers

    Helianthus spp.
    Photo of tall thistle plants with flowers

    Tall Thistle

    Cirsium altissimum
    fork and knife icon

    Edible

    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 water milfoil plants along the shore of a pond

    Water Milfoils

    Myriophyllum spp.
    Photo of white sweet clover flower cluster showing stalk and flowers.

    White and Yellow Sweet Clovers

    Melilotus albus and M. officinale
    invasive icon

    Invasive

    Photo of white avens flower and upper stem leaves.
    Photo of white crownbeard plant with flowers

    White Crownbeard

    Verbesina virginica
    Photo of white snakeroot leaves and flowers

    White Snakeroot

    Ageratina altissima (formerly Eupatorium rugosum)
    Poisonous Icon

    Poisonous

    Photo of yellow crownbeard flowerhead.

    Yellow Crownbeard

    Verbesina helianthoides

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