Midewin National Tallgrass Prairie
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  • Rosinweed

    SCIENTIFIC NAME: Silphium integrifolium

    COMMON NAMES: Rosinweed, Entire-leaf Rosinweed, Prairie Rosinweed, Whole-leaf Rosinweed

    BLOOM TIME: July, Aug, Sept


    • Flowers look like small sunflowers.
    • Leaves feel like rough and sandpapery on the top surface.
    • Root depth is 12 to 14 foot while the plant can be 2 to 3 foot tall.
    • Native American and Pioneer children chewed resin as gum.
    • Seldom seen in cultivated fields, livestock will eat it out of existence.
    • Recovers quickly from wildfires.


    • The seeds are eaten occasionally by Goldfinches.
    • The pollen & nectar of the flowers attract honeybees, bumblebees, Little Carpenter bees, Cuckoo bees, Miner bees, & large Leaf-Cutting bees.