silphium perfoliatum, the cup plant or cup-plant, is a species of flowering plant in the family asteraceae, energy crop, silage,

yellow summer silphium perfoliatum flower plant garden nature horticulture botany agriculture cup herb leaf petal flowering meadow blossom sunlight honey cultivated sun biology flora natural gardening environment green bloom wildflower energy biomass floral beautiful bright botanical sky crop season blue bouquet closeup perfoliate outdoors beauty pollen inflorescence growth cup-plant species family asteraceae silage