Photo of American feverfew flower cluster.

    American Feverfew

    Parthenium integrifolium
    Photo of bird's-foot trefoil, close-up of flower cluster.

    Bird’s-Foot Trefoil

    Lotus corniculatus
    Photo of black medick closeup of cloverlike yellow flowerhead

    Black Medick

    Medicago lupulina
    Photo of a bull thistle flowerhead.

    Bull Thistle

    Cirsium vulgare
    fork and knife icon

    Edible

    Photo of butterfly weed plant with flowers

    Butterfly Weed

    Asclepias tuberosa
    Photo of Canada thistle flowers

    Canada Thistle

    Cirsium arvense
    invasive icon

    Invasive

    Photo of tall thoroughwort plant with flowers

    Common Boneset (Thoroughwort)

    Eupatorium perfoliatum
    Photo of common jimsonweed flower

    Common Jimsonweed

    Datura stramonium
    Poisonous Icon

    Poisonous

    Photo of common milkweed flower cluster

    Common Milkweed

    Asclepias syriaca
    Photo of common St. John’s-wort flower with spent flowers and fruits

    Common St. John’s-Wort

    Hypericum perforatum
    Photo of common water hemlock or spotted cowbane flowers

    Common Water Hemlock

    Cicuta maculata
    Poisonous Icon

    Poisonous

    Photo of corn salad plant flower clusters showing arrangement of buds.

    Corn Salad

    Valerianella radiata
    fork and knife icon

    Edible

    Photo of crown vetch, closeup of a flower cluster.

    Crown Vetch

    Securigera varia (formerly Coronilla varia)
    Poisonous Icon

    Poisonous

    invasive icon

    Invasive

    Photo of dead nettle stalk with flowers

    Dead Nettle

    Lamium purpureum
    Photo of dittany flowers

    Dittany

    Cunila origanoides
    fork and knife icon

    Edible

    Photo of everlasting pea flower and leaves

    Everlasting Pea

    Lathyrus latifolius
    Photo of field milkwort flowerheads.

    Field Milkwort

    Polygala sanguinea
    Photo of flowering spurge flowers

    Flowering Spurge

    Euphorbia corollata
    Poisonous Icon

    Poisonous

    Photo of foxglove beardtongue flowers

    Foxglove Beardtongue

    Penstemon digitalis
    Photo of goat's rue showing flower cluster

    Goat’s Rue (Hoary Pea)

    Tephrosia virginiana
    Photo of hedge parsley flower clusters

    Hedge Parsley

    Torilis arvensis
    Photo of hoary puccoon closeup of flower cluster

    Hoary Puccoon (Orange Puccoon)

    Lithospermum canescens
    Photo of hogwort plant showing upper stem leaves and flowers.

    Hogwort (Woolly Croton)

    Croton capitatus
    Photo of horse nettle flowers and leaves

    Horse Nettle

    Solanum carolinense
    Poisonous Icon

    Poisonous

    Photo of horseweed flowers

    Horseweed (Canada Fleabane, Hog Weed)

    Conyza canadensis (formerly Erigeron canadensis)
    Photo of Indian hemp plant

    Indian Hemp (Dogbane)

    Apocynum cannabinum
    Poisonous Icon

    Poisonous

    Photo of Indian paintbrush flowers

    Indian Paintbrush

    Castilleja coccinea
    Photo of a large-flowered gaura inflorescence

    Large-Flowered Gaura

    Oenothera filiformis (formerly Gaura longiflora, G. biennis)
    Photo of leafy spurge seed heads

    Leafy Spurge

    Euphorbia esula
    Poisonous Icon

    Poisonous

    invasive icon

    Invasive

    Photo of long-leaved bluets plants with flowers

    Long-Leaved Bluets (Slender-Leaved Bluets)

    Houstonia longifolia (sometimes Hedyotis longifolia)
    Photo of purple meadow parsnip foliage and flowers

    Meadow Parsnip

    Thaspium trifoliatum
    Photo of whorled milkweed flowers.

    Milkweeds

    Subfamily Asclepiadoideae
    Photo of a musk thistle blooming flower head.

    Musk Thistle (Nodding Thistle)

    Carduus nutans
    invasive icon

    Invasive

    Photo of northern fog fruit flowering head

    Northern Fog Fruit

    Lippia lanceolata (formerly Phyla lanceolata)
    Photo of Ohio horsemint inflorescence

    Ohio Horsemint

    Blephilia ciliata
    fork and knife icon

    Edible

    Photo of pale Indian plantain flower clusters.

    Pale Indian Plantain

    Arnoglossum atriplicifolium (also Cacalia atriplicifolia)
    Photo of purple milkweed flower cluster

    Purple Milkweed

    Asclepias purpurascens
    Photo of pussytoes showing fuzzy white flowering heads

    Pussytoes (Indian Tobacco)

    Antennaria parlinii
    Photo of a Queen Anne's lace flower cluster, seen from the top
    Photo of a rose gentian flower, closeup

    Rose Gentian (Rose Pink)

    Sabatia angularis
    Photo of rose verbena, or rose vervain, flower cluster showing leaves

    Rose Verbena (Rose Vervain)

    Glandularia canadensis (formerly Verbena canadensis)
    Photo of self-heal flower head

    Self-Heal (Heal-All)

    Prunella vulgaris
    fork and knife icon

    Edible

    Photo of sensitive brier flowers

    Sensitive Briar

    Mimosa quadrivalvis (also Schrankia nuttallii)
    Photo of shepherd’s purse plant and flowers

    Shepherd's Purse

    Capsella bursa-pastoris
    fork and knife icon

    Edible

    Photo of shooting star flowers

    Shooting Star

    Dodecatheon meadia
    Photo of slender bush clover flowers

    Slender Bush Clover

    Lespedeza virginica

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