Helianthus grosseserratus (Sawtooth Sunflower) is a showy perennial with tall and sturdy, reddish or reddish-purple stems, branching along the upper half of the plant. They are topped by a profusion of brilliant flowers, 4 in. across (10 cm), held in loose clusters from late summer to late fall. They are attractive to honeybees and bumblebees, but also to gamebirds or songbirds as they love to eat the seeds. Notwithstanding its common name, the lance-shaped leaves, up to 8 in. long (20 cm), are often toothless or only slightly serrated. Sawtooth Sunflower spreads quickly via its rhizomatous root system. It is perfect for naturalized areas where it can form showy colonies.

• Typically grows up to 5-10 ft. tall (150-300 cm) and 2-3 ft. wide (60-90 cm).
• Prefers full sun in acidic or neutral, rich, moist, well-drained soils. May need staking, particularly if grown in exposed locations.
• Low maintenance, this is an excellent choice for wildflower gardens, prairies and meadows.
• No serious pest or disease issues. May be affected by powdery mildew if the soil is too wet.
• Easily propagated from seed sowed outdoors in fall. May also be propagated by root division in fall, or basal cuttings in spring.
• Native to eastern North America