golden solidago virgaurea flowers on white background. ragweed bushes or ambrosia artemisiifolia. medicinal

solidago ragweed ambrosia flower isolated leaf pollen green garden floral flora summer bloom yellow wild blossom natural golden plant weed inflorescence herbal petal growth rag grass uncultivated stalk stem blooming autumn allergic white pedicle macro meadow head medical virgaurea closeup bud nature pedicel rod fever fall hay background bushes artemisiifolia