500 seeds. Penstemon tubaeflorus. Perennial. 
 
Also known as White Plains Beardtongue. Hardy in zones 4-9
 
Height 40 inches. Spacing 15 inches.
 
Sowing Penstemon Seeds
 
Start seeds indoors in late winter. Barely cover the seeds with soil, then refrigerate for 6 weeks. Full sun.
 
Photo courtesy of Diane's Flower Seeds