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Butterfly bush
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A monarch butterfly with orange and black wings rests on a cluster of bright pink butterfly bush flowers. Summer lilac (Buddleja davidii).
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A monarch butterfly with orange and black wings rests on a cluster of bright pink butterfly bush flowers.
Monarch butterfly on Buddleja An adult monarch butterfly visiting the flowers of a butterfly bush (Buddleja davidii).

Butterfly bush

plant
Also known as: Buddleja
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Butterfly bush, (genus Buddleja), any of more than 100 species 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.

This article was most recently revised and updated by Melissa Petruzzello.