While walking around the City of Hereford, it is always worth looking upwards. There are some nice old buildings with fancy bits on them.
There are also buddleia (buddleja) growing out of the drainpipes.
Buddleia is also known as butterfly bush, as many species of butterfly are highly attracted to the flowers. A lot of people buy these plants for their gardens. They were introduced to Europe from China during the nineteenth century. They are considered to be an invasive species. It outcompetes native species and reduces biodiversity.
Here it is slowly invading a carpark.
And here it is again clambering inexorably into the underpass, ready to disperse its seeds onto unwary passers by. If you are wondering about the graffiti I mentioned it in a previous post, Urban Scrawl. At least the butterflies will be happy though.