![Sawtooth Sunflower - Helianthus grosseserratus 3](https://tnyards.utk.edu/wp-content/uploads/sites/170/2021/02/helianthus_grosseserratus3_john_hilty.jpg)
Common Name: Sawtooth Sunflower
Full sun, moderately wet to moderately dry moisture level, tolerant of a wide range of soils including clay, circumneutral pH. 4 feet height, blooms late summer and fall, yellow flowers, spreads aggressively by rhizomes and slowly by seed.
Germination Code: C(30)
Native Region: Only occurs in Shelby, Carroll, Henderson, Chester, Van Buren, Scott, Meigs, and Hamblen counties
Can be weedy and invasive. Attracts birds, bees and butterflies.
![Sawtooth Sunflower - Helianthus grosseserratus](https://tnyards.utk.edu/wp-content/uploads/sites/170/2021/02/helianthus_grosseserratus_1john_hilty.jpg)
![Sawtooth Sunflower - Helianthus grosseserratus 2](https://tnyards.utk.edu/wp-content/uploads/sites/170/2021/02/helianthus_grosseserratus2_john_hilty.jpg)