300 seeds. Leucanthemum x superbum. Perennial. 
 
Height 30 inches. Spacing 18 inches.
 
Also known as Chrysanthemum maximum 'Alaska.' Hardy in zones 4-9.
 
Sowing Shasta Daisy Seeds
 
Start seeds indoors 6-8 weeks before the last frost date. Or sow outdoors after the last frost. Barely cover the seeds. Full sun to part shade.
 
Photo courtesy of Diane's Flower Seeds