Slender-stemmed plant, 1 1/2 to 3 ft. tall. Thin, coarsly-toothed leaves. Flowers occur on the upper side of hairy stalks which arch out and downward creating a vase-shaped flower cluster. Clumps of slender, gray-downy stems produce terminal, one-sided, yellow plumes that gives the perennial a vase-shaped appearance.Prairie Goldenrod attracts butterflies. Individual plants bloom at various times, thus extending the flowering season.