50 seeds. Platycodon grandiflorua. Perennial. 
 
Also known as Balloon Flower. Hardy in zones 3-9.
 
Height 24 inches. Spacing 12 inches.
 
Sowing Platycodon Seeds
 
Start seeds indoors 8 weeks before the last frost date. Barely cover the seeds with soil. Full sun to part shade.
 
Photo courtesy of Diane's Flower Seeds