Penstemon strictus
Rocky Mountain Penstemon
Description
Perennial grows to a mature size of about 2' x 2'. It is native to the Mountain States regions with 2' spikes of violet blue flowers. Very hardy and one of the easiest Penstemons to grow. Best suited to higher elevations rarely blooms in low desert. Native to upland grasslands of Coloado, Utah and Wyoming, all the way down into Arizona.