The eggs of this species are laid on the leaves of sallow or willow (Salix spp.), bog myrtle (Myrica gale) or, in Scotland, occasionally birch (Betula).
As with other Coleophorids, the larva forms a case from the leaf, in which it overwinters. The case formed by this species is long, slender and frequently woolly in appearance.
The adult moths flies in a single generation emerging in June and July.
The moth is common in areas where its hostplant grows, throughout the whole of Britain, except the far north of Scotland.