Wild by the fence in this woody front garden, with leaf rust (added as a separate observation).
In full bloom. Cape ivy is under control in much of the willow riparian habitat at Lobos Creek but obviously not here.
As strange as it might seem, I've been looking for this species for a while...
Delairea is a plant genus within the family Asteraceae. It is classified within tribe Senecioneae. It contains only one species, Delairea odorata, which was previously included in the genus Senecio as Senecio mikanioides, and is known as cape ivy in some parts of the world and German ivy in others.