The flowers of the Ironweed are small and bloom in clusters that sit atop the plant. Blooming progresses from the center of the cluster to the edges. Even though the blooms themselves are somewhat small, when seen close up they have an exotic look to them. Flower color ranges from lavender to purple and white flowers are considered rare. Classified as a wildflower and perennial herb it is recommended to grow alongside stream edges, to naturalize meadows and to grow as a border in flower gardens. It provides color from late August to October and is a majestic plant.