Iron Butterfly Narrow-leaf Ironweed (Vernonia lettermannii 'Iron Butterfly') is a compact, upright perennial that offers vibrant color and texture for commercial landscapes. Known for its striking purple flowers that bloom in late summer to fall, Iron Butterfly is a great addition to native plant gardens, wildflower meadows, and pollinator-friendly landscapes. This cultivar grows to a height of 3-4 feet, making it an ideal choice for mass plantings, borders, or as a backdrop in garden beds. Iron Butterfly is highly attractive to pollinators, particularly butterflies and bees, and its drought tolerance makes it an excellent choice for xeriscaping and low-maintenance landscapes. Its narrow, arching leaves provide visual interest, and its ability to adapt to various soil types and climates makes it a versatile, resilient option for both commercial and residential landscapes.