300 seeds. Penstemon angustifolius. Perennial. 
 
Also known as Narrowleaf Beardtongue. Hardy in zones 4-10.
 
Height 12 inches. Spacing 10 inches.
 
Sowing Penstemon angustifolius Seeds
 
Start seeds indoors in late winter. Barely cover the seeds with soil, then refrigerate for 8 weeks. Full sun.
 
Photo courtesy of Diane's Flower Seeds