It truly lives up to its species name — grandiflorus — this tall, showy, Large-flowered Beardtongue. What makes it even more impressive is that it grows in dense clumps along roadsides, preferring the sparsely colonized roadcuts.
It is known by many other names as well: Showy Beardtongue, Pink Beardtongue, Shell-leaf Beardtongue, Canterbury Bells, and Wild Foxglove. Large-flowered seems the most appropriate, though based on the size of its floral display.
Individual plants were at least 3 feet tall, making it one of the largest of the Penstemons, with flowers that were about 2 inches long and almost an inch wide.
As a testament to its adaptability and tolerance, Prairie Moon Nursery’s description of this species is: “prefers full sun to partial shade, dry-mesic to dry conditions, and poor soil containing rocky material or sand.”