Yellow hawkweed is a common weed characterized by its bright yellow flowers and hairy leaves. It is also known by several other names such as king devil, devil's paintbrush, and yellow devil. Other synonyms for yellow hawkweed include orange hawkweed, devil's weed, devil's-grass, and yellow star. While it is considered a beautiful wildflower by some, it is also considered a nuisance by others because of its aggressive spreading habits. Yellow hawkweed typically grows in open fields, meadows, and along roadsides. It is an unwelcome sight for gardeners and farmers because it easily invades lawns and crops, choking out other beneficial plants.