How to identify Buddleia
Buddleia can be hard to spot when a seedling, but after only a few years it grows into the characteristic small woody shrub many of us know. It has long, narrow, spear-shaped leaves with serrated edges and, if you look very closely, you will find very fine hairs on the underside.
In late summer it produces lots of drooping spikes of densely clustered, small, purple (or sometimes white) flowers that sometimes have a 'honey like' or 'peppery fragrance. The smell is part of the reason why it is popular with insects.