Helianthus floridanus eng

    Helianthus floridanus is a perennial sometimes as much as 200 cm (almost 7 feet) tall, spreading by means of underground rhizomes. Leaves are long and narrow, up to 15 cm (6 inches) long. It is a perennial herb sometimes as much as 150 cm (5 feet) tall. One plant can produce as many as 6 flower heads, each with 10-20 yellow ray florets surrounding as least  red, purple, or yellow disc florets.