25 seeds. Datura inoxia. Perennial in zone 6-10.
 
Also known as Devil's Trumpet, Toloache and Moonflower.
 
Height 3 Feet. Spacing 2 feet.
 
Sowing Datura Seeds:
 
Start seeds indoors 8 weeks before the last frost date. Or sow outdoors in spring, 1/8 inch deep. Germinates at 75-80 degrees. Full sun.
 
Photo courtesy of Diane's Flower Seeds