Plant Profile: Vernonia lettermannii 'Iron Butterfly'

Iron Butterfly Ironweed is a perennial wildflower belonging to the aster family, characterized by its mounding growth and vibrant purple blooms. This particular cultivar has been developed to emphasize a compact form, quick growth, and an extended flowering season. Throughout the summer, numerous delicate disc flowers emerge, providing a vital source of nectar for bees and butterflies at a time when many other plants are fading. The foliage remains visually appealing even when the plant is not in bloom, contributing a fine texture to the garden.

To cultivate this plant, choose average, well-drained soil and place it in full sun or light shade. Once established, it demonstrates drought resistance and can thrive in poor soil conditions, so avoid excessive fertilization. It’s best to leave the stems intact during winter and trim them back to the ground in late winter or early spring.

Iron Butterfly is an excellent choice for rock gardens, drought-resistant landscapes, or as part of a border in a pollinator garden.

For further details on Vernonia lettermanii, please refer to additional resources.