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n. See butterfly bush.

n. A tree or shrub of the genus Buddleja, especially Buddleja davidii, a large ornamental shrub whose lilac flowers attract butterflies.

n. tropical shrub having clusters of white or violet or yellow flowers

"Stinging nettles are weeds that never seem to settle in my garden but some common British butterflies love certain flowers and are particularly attracted by any 'buddleia' shrub (a powerful magnet for all the butterflies) - some of them grow wild along railway lines."

shrub    bush   

butterfly bush