Alien-looking trailers & trees
I have a house that looks pretty odd, a bit like a desert fortress had a child with a Victorian semi. The front garden is bare, faces SW, and I decided to go along the oddness by planting alien-looking, forbidding, or otherwise weird and unusual plants, especially trailers and trees.
But what are they that will survive a London winter? Sedum Morganianum (donkey's tail succulent), for example, would have been ideal, but they seem very borderline in hardiness, and likely on the wrong side of that line. Trawling catalogues give me a lot of cute, cottagey trailers, but they'd look out of place.
Thank you very much for your knowledge.