The Babianas (Baboon flowers) have been stunning, even though they are living in pot at the minute. I think I will sneak them out into the garden somewhere when Peter isn't looking. And make up some sort of story about them being natives from Western Australia.
But not under the Prothrantera - you would not see one for the other. Every now and then I think about a purple green and white garden, and then give up on the idea.