Penstemon spectabilis is a perennial herb growing erect to a maximum height often exceeding one meter.
The thin leaves are lance-shaped to oval, serrated on the edges, and up to 10 centimeters in length.
The oppositely arranged pairs may fuse about the stem at the bases.
The inflorescence bears wide-mouthed tubular purple-blue flowers which may be over 3 centimeters long.
The throat is lighter in color, lavender to nearly white, and hairless inside.

This plant is often a pioneer species in habitat recently disturbed.
It is pollinated by wasps such as Pseudomasaris vespoides, as well as by hummingbirds.
Penstemon spectabilis is a perennial herb growing erect to a maximum height often exceeding one meter. The thin leaves are lance-shaped to oval, serrated on the edges, and up to 10 centimeters in length. The oppositely arranged pairs may fuse about the stem at the bases. The inflorescence bears wide-mouthed tubular purple-blue flowers which may be over 3 centimeters long. The throat is lighter in color, lavender to nearly white, and hairless inside.
This plant is often a pioneer species in habitat recently disturbed. It is pollinated by wasps such as Pseudomasaris vespoides, as well as by hummingbirds.
Penstemon spectabilis