aka, moonflower or jimson weed. They are beautiful, but reseed like the dickens. I have a datmansia that is a cross between a brug and a datura, and it reseeds like the datura. I try to cut all the little spiney seed pods off before they can open......but I am not always successful at this so I have to pull them up the next Spring.
Bob, that is a native plant, Datura wrightii. D. inoxia and D. metel [metelloides] have smooth leaves. This one has fuzzy leaves, hence their sage like color. Those must be either early morning shots or on a cooler day, since sunlight/warmth force closure of those flowers. They are often called "moonflowers" since they bloom at night. Hawkmoths [hummingbird moths] are the primary pollinator and their larvae feed on them, too. Hornworms also leave alone the precious seed pods, which are spikey just in case a wandering cat should forget to just eat leaves, not fruit. Some other names are "thornapple."