We have a plant which I sometimes think is a datura and at other times that it's a brugmansia. I have read that brugmansia blooms point down, and datura up. Ours are mostly horizontal, sometimes a bit up and sometimes a bit down.
According to Wikipedia, daturas are herbaceous and do not grow higher than 4 feet, while brugmansias have a trunk. Our plant is over 12 feet tall and has a trunk.
I think the blooms on our plant are like datura blooms, but if the info is correct, the plant as a whole more closely meets the description of a brugmansia. Could it be a datura that doesn't die back in winter because we are frost free here (south of France)? Or some kind of hybrid?
This has puzzled me for a long time, so it would be nice to have the question resolved!
Bud (early June)
New bloom (June)
Bloom colour gradually fades (today)