Photo of common cinquefoil plants with flowers

    Common Cinquefoil

    Potentilla simplex
    Photo of common milkweed flower cluster

    Common Milkweed

    Asclepias syriaca
    Photo of flowering spurge flowers

    Flowering Spurge

    Euphorbia corollata
    Poisonous Icon

    Poisonous

    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 whorled milkweed flowers.

    Milkweeds

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

    Sunflowers

    Helianthus spp.
    Photo of yellow crownbeard flowerhead.

    Yellow Crownbeard

    Verbesina helianthoides