I was visiting our pet cemetery in the garden where three of our dogs have their graves. I noticed the butterflies on the Buddleia bushes. I brought the Buddleia over with two wheelie bins of plants when we emigrated to Ireland seventeen years ago last month. It was one of my successful cuttings that I made. We have made lots of Buddleia bushes since then.
If you want to plant a bush that will attract butterflies, plant a Buddleia. They are name after a vicar and Botanist: the Reverend Adam Buddle. He lived near Peterborough in Deeping St James. I saw some Buddleia growing in derelict land near Temple Mead railway station when I went to Dorset in June.
My mental juke box started playing when I watched the butterflies. Here's a song called Dog and Butterfly by the American rock band Heart. I was lucky enough to once see them play live at Birmingham NEC in about 1988? Enjoy.