Bleeding Heart Vine

Clerodendrum thomsoniae, known everywhere as the Bleeding Heart Vine, is a West African twining climber that carries inflated white calyces from which crimson corollas emerge, giving the two-tone effect the common name describes. It climbs to 3 to 4 metres on a support.
It is a shade and filtered-light climber rather than a sun plant, and it earns its place on shaded courtyard walls, pergola undersides and large interior trellises.
The Bleeding Heart Vine is the flowering climber to reach for when the wall in question is a shaded one.