[1] It is native to the Pacific Northwest of North America, from Oregon to Alaska.

[2] Penstemon serrulatus has multiple herbaceous stems up to 70 centimetres (28 in) tall growing from a perennial woody base.

The leaves are lanceolate to ovate-oblong with sharply serrated edges.

The inflorescence consists of clusters of tubular blue to purple flowers.

[1] Media related to Penstemon serrulatus at Wikimedia Commons