Helianthus laetiflorus aka Perennial Sunflower

Helianthus laetiflorus, also known as the cheerful sunflower or perennial sunflower, is a rhizomatous, clump-forming plant in the family Asteraceae. Native to various regions across Canada and the central and eastern United States, it can reach heights of up to 2m. This vibrant sunflower features dark green, narrowly-ovate leaves with toothed edges. From late summer to autumn, it produces bright yellow flowerheads measuring around 10-12cm in diameter, which boast dark centers, creating a striking contrast. While the showy sunflower's appearance is captivating, it should be noted that it has the potential to become invasive if not properly managed.