I got some double purple seeds on ebay, and I think the guy got his seeds mixed up, cause this definitely is a purple and yellow datura. :) Working hard to get this guy pollenated so that I'll have some seeds for it next year!
Oh yea the regular old white ones grow here in the desert in areas that are sandy. They grow small and don't bloom that long like that without water, but they do grow here. I want to get the purple and purple yellow ones now. I have one that spread in a planter about 4 to 5 feet and 3 feet high.