Tall Sunflower

About Tall Sunflower

Tall Sunflower, also known as Giant Sunflower, is a true giant of the prairie, reaching skyward to provide a late-season burst of sunshine. This towering perennial typically grows between 3 and 9 feet tall, though it can occasionally reach a staggering 12 feet under ideal conditions. Its branched, often purplish stems are covered in spreading hairs and topped with loose clusters of light yellow flowers, each featuring 10 to 20 rays. Native to much of the central and eastern United States and Canada, it thrives in moist to medium soils and full to partial sun. Beyond its impressive stature, Tall Sunflower is a powerhouse for wildlife; its seeds are a favorite for numerous bird species, while its nectar sustains late-season pollinators. Because it is strongly rhizomatous and aggressive, it is best suited for expansive areas rather than small home gardens. For successful germination, seeds require a 30-day cold-moist stratification period.