Sawtooth Sunflower

Photo by John Hilty http://www.illinoiswildflowers.info/ Photo by John Hilty http://www.illinoiswildflowers.info/ Photo by John Hilty http://www.illinoiswildflowers.info/

Sawtooth Sunflower Helianthus grosseserratus 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. flower;sun;wet;clay flower;sun;wet;loam flower;sun;wet;sand flower;sun;medium;clay flower;sun;medium;loam flower;sun;medium;sand flower;sun;dry;clay flower;sun;dry;loam flower;sun;dry;sand