Penstemon serrulatus
Common name(s): beardtongue, cascade penstemon
Description: perennial; found in the Oregon Cascade and Coast range and northward. Finely serrated leaves and blue-violet flowers in summer. Generally occurs in wetter habitats than most penstemon species.
Height: to 2 ft. Spread: to 2 ft.
Position: full sun and well-draining soil
Uses: ornamental, to attract pollinators
Winter Hardiness: to 0 F and below