350 seeds. Penstemon canescens. Perennial. 
 
Eastern Gray Beardtongue. Hardy in zones 4-8.
 
Height 24 inches. Spacing 12 inches.
 
Sowing Penstemon angustifolius Seeds
 
Start seeds indoors in late winter. Barely cover the seeds with soil, then refrigerate for 8 weeks. Full sun.