I got this plant self seeded quite some years ago. I came to learn that is the Jerusalem Cherry. Poisonous berries that look like Jaffas, but a nice looking ornamental plant.
So I threw a couple of berries into a clear garden bed I had but now have a dozen seedlings. That's noxious weed behaviour. Shall I keep them or kill them?
I'll wait a few weeks but I think I'll pull them out.