Helenium autumnale
Helenium autumnale is a flowering perennial plant for sun. It generally blooms in September & October. The common name is common sneezeweed & it is commonly available at most nurseries during the later part of summer. It is also called Helen's flower. The name genus name
Helenium comes from the Greek word for another plant named for Helen of Troy &
autumnale means 'pertaining to autumn'.
Helenium autumnale is native to North America where it is widespread across the US & Canada. The only state where it has not been found to grow is New Hampshire. I'm not sure they have looked hard enough in that state. The flowers are yellow, orange, brick red, or a combination of those colors.
Helenium autumnale grows to about 3 feet tall & requires a moderate amount of water. It also tolerates wetness. It is not the most beautiful of plants, but the flowers are pretty & the colors bold. It blooms at a time when there is little else.