Buddleia (Butterfly Bush)
Buddleia was introduced into the UK from China in the 1890s and has now become widely naturalised on waste ground, along railway cuttings and in urban areas. Its familiar purple flowers bloom from June to October and attract all kinds of butterflies and moths looking for nectar sources. Its winged seeds are dispersed by the wind and find it easy to colonise stony ground.
Buddleia is also known as the 'butterfly bush', because it is such a popular nectar source in gardens.