A genus of plants constituting the genus Buddleja (family Scrophulariaceae), native to tropical and subtropical areas of the world. Primarily trees or shrubs, most species of Buddleja have hairy leaves and clusters of purple, pink, white, yellow, or orange flowers that are attractive to butterflies. Several species, notably B. davidii, are cultivated as garden ornamentals.

Britannica Editors. "butterfly bush". Encyclopedia Britannica, 26 Jun. 2014, https://www.britannica.com/plant/butterfly-bush. Accessed 20 October 2026.