Penstemon whippleanus

Whipple's Penstemon. Broadly distributed on both sides of the Rockies down the US, this should be more widely available. Most commonly with clustered down-turned trumpets of a rich burgundy to purple, different population can also be white or lavender. Very pleasing in all of its forms, this is a good garden plant taking more moisture than a lot of the rock garden Penstemons.