Eriolarynx (Iochroma) australe

This South American member of the potato family forms a free growing woody shrub to 2.5m tall, with softly hairy leaves and pendulous, funnel shaped, violet-blue flowers, dangling along the undersides of the branches in late summer. Most suited to a protected position, ideally a west wall or suchlike, but much hardier than is given credit for and survived -14c here by regrowing with great vigour.