Common Sneezeweed/Helenium autumnale

Helenium autumnale is a perennial herb up to 130 cm tall. In late summer and fall, one plant can produce as many as 100 yellow flower heads in a branching array. Each head has 11-21 ray florets surrounding sometimes as many as 800 disc florets. It is a North American species. Common sneezeweed is cultivated as a garden perennial. There are multiple named varieties varying in color and height.