Penstemon grandiflorus, or shell-leaf penstemon, is the largest of the pentstemons, and consequently is easy to spot along the road, where it is blooming profusely this time of year!I love seeing whole hillsides covered with this beauties! I’ve found these photograph best not in full sun, unlike a lot of other flowers, due (I think) to how fleshy their leaves and petals are. While other flowers take on what I like to call a “stained glass effect,” because shell-leaf penstemon has such thick petals, the light doesn’t shine through it well.