caption: The image shows a close up of a plant with purple knapweed flowers in the middle of a field, surrounded by dry grass. The flowers have a vibrant purple hue and are clustered together in a cluster, with some of the petals slightly overlapping each other. The leaves of the plant are a deep green color and the stems are thin and delicate. The dried grass in the background is a light brown color, providing a stark contrast to the bright purple of the flowers.