In the process of our anti-anthocyanin campaign trying to rid and keep P. digitalis free of the red pigments that recent breeding has favored, we’ve discovered it’s far easier just to grow the showier P. tubaeflorus. It’s arguably showier, and it’s just as easy and adaptable and long lived as a species in the Northeast, which isn’t always the case for Penstemon spp. Sun/part sun 2-3’ 4” pot